73968035 divided by 810 
The aim is to understand the frequency of 810 in 73968035.

On to step 1:
When dividing 7 by 810, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (3) from the dividend and append it to 7, then repeat: 73 / 810

Moving on to step 2:
If we divide 73 by 810, we get 0 and a remainder of 73.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 73 after subtracting 0 from 73.
Fetch the next digit (9) from the dividend, attach it to 73 and continue: 739 / 810

Advancing to step 3:
739 divided by 810 is 0 with a remainder of 739.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 739 after subtracting 0 from 739.
Include the next digit (6) from the dividend after 739, then repeat: 7396 / 810

Going ahead to step 4:
7396 divided by 810 is 9 with a remainder of 106.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Subtract 7290 from 7396 to get 106.
Take the next digit (8) from the dividend and append it to 106, then repeat: 1068 / 810

Step 5:
The number 810 fits into 1068 1 times, leaving a remainder of 258.
Record the quotient 1 as the next digit in the result. 
Result so far: 91.0
Subtracting 810 from 1068 leaves us with 258.
Grab the next digit (0) from the dividend, add it to 258, then carry on: 2580 / 810

Going ahead to step 6:
The number 810 fits into 2580 3 times, leaving a remainder of 150.
The next digit of our result is 3. 
Result so far: 913.0
Subtract 2430 from 2580 to get 150.
Bring next digit (3) of the dividend behind the 150 and repeat the process: 1503 / 810

Step 7:
1503 divided by 810 is 1 with a remainder of 693.
Write down 1 as next digit of the result. 
Result so far: 9131.0
Subtracting 810 from 1503 leaves us with 693.
Bring next digit (5) of the dividend behind the 693 and repeat the process: 6935 / 810

Step 8:
810 can be fit into 6935 8 times, resulting in a remainder of 455.
Put 8 as the next digit of the answer. 
Result so far: 91318.0
If we take 6480 away from 6935, we end up with 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

On to step 9:
The number 810 fits into 4550 5 times, leaving a remainder of 500.
Record the quotient 5 as the next digit in the result. 
Result so far: 91318.5
If we subtract 4050 from 4550, we get 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Advancing to step 10:
5000 divided by 810 is 6 with a remainder of 140.
Record the quotient 6 as the next digit in the result. 
Result so far: 91318.56
Subtracting 4860 from 5000 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 11:
If we divide 1400 by 810, we get 1 and a remainder of 590.
The next digit of our result is 1. 
Result so far: 91318.561
Subtract 810 from 1400 to get 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Advancing to step 12:
If we divide 5900 by 810, we get 7 and a remainder of 230.
Use 7 as the next digit of our solution. 
Result so far: 91318.5617
Subtract 5670 from 5900 to get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Let's proceed to step 13:
810 can be fit into 2300 2 times, resulting in a remainder of 680.
Record the quotient 2 as the next digit in the result. 
Result so far: 91318.56172
Subtracting 1620 from 2300 leaves us with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

On to step 14:
When dividing 6800 by 810, we get 8 with a remainder of 320.
Record the quotient 8 as the next digit in the result. 
Result so far: 91318.561728
If we subtract 6480 from 6800, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Step 15:
810 goes into 3200 3 times with a remainder of 770.
The number 3 becomes the next digit in our result. 
Result so far: 91318.5617283
Subtracting 2430 from 3200 leaves us with 770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7700, and continue the process.

Advancing to step 16:
If we divide 7700 by 810, we get 9 and a remainder of 410.
Put 9 as the next digit of the answer. 
Result so far: 91318.56172839
Deduct 7290 from 7700 and we're left with 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

The quotient of the division is 91318.56172839, and the remainder is 4.1e-07.