We look at the division of 83918787 by 630 
The aim is to understand the frequency of 630 in 83918787.

Let's proceed to step 1:
630 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 630

Moving on to step 2:
The number 630 fits into 83 0 times, leaving a remainder of 83.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 83 after subtracting 0 from 83.
Take the next digit (9) from the dividend and append it to 83, then repeat: 839 / 630

Moving on to step 3:
630 goes into 839 1 times with a remainder of 209.
The next digit of our result is 1. 
Result so far: 1.0
If we take 630 away from 839, we end up with 209.
Include the next digit (1) from the dividend after 209, then repeat: 2091 / 630

Let's proceed to step 4:
If we divide 2091 by 630, we get 3 and a remainder of 201.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
Deduct 1890 from 2091 and we're left with 201.
Include the next digit (8) from the dividend after 201, then repeat: 2018 / 630

On to step 5:
When dividing 2018 by 630, we get 3 with a remainder of 128.
The number 3 becomes the next digit in our result. 
Result so far: 133.0
The remainder is 128 after subtracting 1890 from 2018.
Bring next digit (7) of the dividend behind the 128 and repeat the process: 1287 / 630

Let's proceed to step 6:
When dividing 1287 by 630, we get 2 with a remainder of 27.
Write down 2 as next digit of the result. 
Result so far: 1332.0
Subtracting 1260 from 1287 leaves us with 27.
Include the next digit (8) from the dividend after 27, then repeat: 278 / 630

Let's proceed to step 7:
278 divided by 630 is 0 with a remainder of 278.
Put 0 as the next digit of the answer. 
Result so far: 13320.0
Deduct 0 from 278 and we're left with 278.
Include the next digit (7) from the dividend after 278, then repeat: 2787 / 630

Let's proceed to step 8:
If we divide 2787 by 630, we get 4 and a remainder of 267.
The number 4 becomes the next digit in our result. 
Result so far: 133204.0
The remainder is 267 after subtracting 2520 from 2787.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Moving on to step 9:
630 goes into 2670 4 times with a remainder of 150.
Record the quotient 4 as the next digit in the result. 
Result so far: 133204.4
If we subtract 2520 from 2670, we get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Step 10:
630 goes into 1500 2 times with a remainder of 240.
Use 2 as the next digit of our solution. 
Result so far: 133204.42
The remainder is 240 after subtracting 1260 from 1500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 11:
630 can be fit into 2400 3 times, resulting in a remainder of 510.
The next digit of our result is 3. 
Result so far: 133204.423
The remainder is 510 after subtracting 1890 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Going ahead to step 12:
The number 630 fits into 5100 8 times, leaving a remainder of 60.
The number 8 becomes the next digit in our result. 
Result so far: 133204.4238
Deduct 5040 from 5100 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 13:
630 goes into 600 0 times with a remainder of 600.
Put 0 as the next digit of the answer. 
Result so far: 133204.4238
If we take 0 away from 600, we end up with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

On to step 14:
630 goes into 6000 9 times with a remainder of 330.
Use 9 as the next digit of our solution. 
Result so far: 133204.423809
If we take 5670 away from 6000, we end up with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

On to step 15:
630 goes into 3300 5 times with a remainder of 150.
Write down 5 as next digit of the result. 
Result so far: 133204.4238095
The remainder is 150 after subtracting 3150 from 3300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 16:
1500 divided by 630 is 2 with a remainder of 240.
The number 2 becomes the next digit in our result. 
Result so far: 133204.42380952
Subtracting 1260 from 1500 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

The quotient of the division is 133204.42380952, and the remainder is 2.4e-07.