91507550 ÷ 838 
The aim is to understand the frequency of 838 in 91507550.

Going ahead to step 1:
The number 838 fits into 9 0 times, leaving a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 838

Going ahead to step 2:
838 goes into 91 0 times with a remainder of 91.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 91, we get 91.
Append the next digit (5) from the dividend to 91 and continue with: 915 / 838

Advancing to step 3:
838 can be fit into 915 1 times, resulting in a remainder of 77.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 838 from 915 to get 77.
Fetch the next digit (0) from the dividend, attach it to 77 and continue: 770 / 838

Let's proceed to step 4:
838 can be fit into 770 0 times, resulting in a remainder of 770.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we take 0 away from 770, we end up with 770.
Fetch the next digit (7) from the dividend, attach it to 770 and continue: 7707 / 838

Advancing to step 5:
838 goes into 7707 9 times with a remainder of 165.
Write down 9 as next digit of the result. 
Result so far: 109.0
Subtract 7542 from 7707 to get 165.
Append the next digit (5) from the dividend to 165 and continue with: 1655 / 838

Step 6:
The number 838 fits into 1655 1 times, leaving a remainder of 817.
The next digit of our result is 1. 
Result so far: 1091.0
If we take 838 away from 1655, we end up with 817.
Take the next digit (5) from the dividend and append it to 817, then repeat: 8175 / 838

Step 7:
When dividing 8175 by 838, we get 9 with a remainder of 633.
Write down 9 as next digit of the result. 
Result so far: 10919.0
Subtract 7542 from 8175 to get 633.
Include the next digit (0) from the dividend after 633, then repeat: 6330 / 838

Going ahead to step 8:
838 goes into 6330 7 times with a remainder of 464.
Write down 7 as next digit of the result. 
Result so far: 109197.0
Deduct 5866 from 6330 and we're left with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Step 9:
838 can be fit into 4640 5 times, resulting in a remainder of 450.
The next digit of our result is 5. 
Result so far: 109197.5
Subtracting 4190 from 4640 leaves us with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Going ahead to step 10:
If we divide 4500 by 838, we get 5 and a remainder of 310.
Record the quotient 5 as the next digit in the result. 
Result so far: 109197.55
The remainder is 310 after subtracting 4190 from 4500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

The quotient of the division is 109197.55, and the remainder is 0.31.