Let's divide 19890151 by 79
We want to figure out the number of times 19890151 can be divided by 79.

Let's proceed to step 1:
1 divided by 79 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 79

On to step 2:
The number 79 fits into 19 0 times, leaving a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 19, we get 19.
Include the next digit (8) from the dividend after 19, then repeat: 198 / 79

Going ahead to step 3:
198 divided by 79 is 2 with a remainder of 40.
The next digit of our result is 2. 
Result so far: 2.0
If we take 158 away from 198, we end up with 40.
Include the next digit (9) from the dividend after 40, then repeat: 409 / 79

Let's proceed to step 4:
79 goes into 409 5 times with a remainder of 14.
The next digit of our result is 5. 
Result so far: 25.0
Deduct 395 from 409 and we're left with 14.
Include the next digit (0) from the dividend after 14, then repeat: 140 / 79

Moving on to step 5:
140 divided by 79 is 1 with a remainder of 61.
The next digit of our result is 1. 
Result so far: 251.0
Subtracting 79 from 140 leaves us with 61.
Take the next digit (1) from the dividend and append it to 61, then repeat: 611 / 79

On to step 6:
The number 79 fits into 611 7 times, leaving a remainder of 58.
The number 7 becomes the next digit in our result. 
Result so far: 2517.0
Subtract 553 from 611 to get 58.
Include the next digit (5) from the dividend after 58, then repeat: 585 / 79

Step 7:
When dividing 585 by 79, we get 7 with a remainder of 32.
The number 7 becomes the next digit in our result. 
Result so far: 25177.0
If we subtract 553 from 585, we get 32.
Fetch the next digit (1) from the dividend, attach it to 32 and continue: 321 / 79

Step 8:
79 goes into 321 4 times with a remainder of 5.
The next digit of our result is 4. 
Result so far: 251774.0
Deduct 316 from 321 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 9:
If we divide 50 by 79, we get 0 and a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 251774.0
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 10:
500 divided by 79 is 6 with a remainder of 26.
The next digit of our result is 6. 
Result so far: 251774.06
The remainder is 26 after subtracting 474 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 11:
79 goes into 260 3 times with a remainder of 23.
Use 3 as the next digit of our solution. 
Result so far: 251774.063
Subtract 237 from 260 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 12:
If we divide 230 by 79, we get 2 and a remainder of 72.
The number 2 becomes the next digit in our result. 
Result so far: 251774.0632
If we subtract 158 from 230, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 13:
When dividing 720 by 79, we get 9 with a remainder of 9.
Record the quotient 9 as the next digit in the result. 
Result so far: 251774.06329
Deduct 711 from 720 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 14:
The number 79 fits into 90 1 times, leaving a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 251774.063291
If we take 79 away from 90, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 15:
If we divide 110 by 79, we get 1 and a remainder of 31.
The number 1 becomes the next digit in our result. 
Result so far: 251774.0632911
Subtracting 79 from 110 leaves us with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Our division results in 251774.0632911 with a remaining 3.1e-07.