Let's divide 77750974 by 126
The aim is to understand the frequency of 126 in 77750974.

On to step 1:
126 goes into 7 0 times with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 126

Moving on to step 2:
If we divide 77 by 126, we get 0 and a remainder of 77.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 77 leaves us with 77.
Grab the next digit (7) from the dividend, add it to 77, then carry on: 777 / 126

Moving on to step 3:
If we divide 777 by 126, we get 6 and a remainder of 21.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtracting 756 from 777 leaves us with 21.
Append the next digit (5) from the dividend to 21 and continue with: 215 / 126

Going ahead to step 4:
When dividing 215 by 126, we get 1 with a remainder of 89.
Record the quotient 1 as the next digit in the result. 
Result so far: 61.0
Deduct 126 from 215 and we're left with 89.
Include the next digit (0) from the dividend after 89, then repeat: 890 / 126

Going ahead to step 5:
126 goes into 890 7 times with a remainder of 8.
Record the quotient 7 as the next digit in the result. 
Result so far: 617.0
If we take 882 away from 890, we end up with 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 126

Advancing to step 6:
When dividing 89 by 126, we get 0 with a remainder of 89.
The number 0 becomes the next digit in our result. 
Result so far: 6170.0
If we take 0 away from 89, we end up with 89.
Fetch the next digit (7) from the dividend, attach it to 89 and continue: 897 / 126

Moving on to step 7:
If we divide 897 by 126, we get 7 and a remainder of 15.
The next digit of our result is 7. 
Result so far: 61707.0
If we take 882 away from 897, we end up with 15.
Fetch the next digit (4) from the dividend, attach it to 15 and continue: 154 / 126

On to step 8:
When dividing 154 by 126, we get 1 with a remainder of 28.
Write down 1 as next digit of the result. 
Result so far: 617071.0
If we subtract 126 from 154, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 9:
If we divide 280 by 126, we get 2 and a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 617071.2
Deduct 252 from 280 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 10:
If we divide 280 by 126, we get 2 and a remainder of 28.
The next digit of our result is 2. 
Result so far: 617071.22
Subtract 252 from 280 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Our division results in 617071.22 with a remaining 0.028.