We look at the division of 123837 by 77 
The aim is to understand the frequency of 77 in 123837.

Moving on to step 1:
77 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 77

Moving on to step 2:
77 can be fit into 12 0 times, resulting in a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Append the next digit (3) from the dividend to 12 and continue with: 123 / 77

Advancing to step 3:
When dividing 123 by 77, we get 1 with a remainder of 46.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 77 away from 123, we end up with 46.
Fetch the next digit (8) from the dividend, attach it to 46 and continue: 468 / 77

Step 4:
77 goes into 468 6 times with a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 16.0
The remainder is 6 after subtracting 462 from 468.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 77

Moving on to step 5:
77 goes into 63 0 times with a remainder of 63.
The number 0 becomes the next digit in our result. 
Result so far: 160.0
Subtracting 0 from 63 leaves us with 63.
Grab the next digit (7) from the dividend, add it to 63, then carry on: 637 / 77

Let's proceed to step 6:
The number 77 fits into 637 8 times, leaving a remainder of 21.
The next digit of our result is 8. 
Result so far: 1608.0
Deduct 616 from 637 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 7:
77 can be fit into 210 2 times, resulting in a remainder of 56.
Write down 2 as next digit of the result. 
Result so far: 1608.2
If we take 154 away from 210, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 8:
77 goes into 560 7 times with a remainder of 21.
Write down 7 as next digit of the result. 
Result so far: 1608.27
If we subtract 539 from 560, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 9:
210 divided by 77 is 2 with a remainder of 56.
Use 2 as the next digit of our solution. 
Result so far: 1608.272
Deduct 154 from 210 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 10:
The number 77 fits into 560 7 times, leaving a remainder of 21.
Put 7 as the next digit of the answer. 
Result so far: 1608.2727
Subtract 539 from 560 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 11:
77 goes into 210 2 times with a remainder of 56.
Record the quotient 2 as the next digit in the result. 
Result so far: 1608.27272
Subtracting 154 from 210 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 12:
77 can be fit into 560 7 times, resulting in a remainder of 21.
The next digit of our result is 7. 
Result so far: 1608.272727
Subtracting 539 from 560 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 13:
If we divide 210 by 77, we get 2 and a remainder of 56.
Record the quotient 2 as the next digit in the result. 
Result so far: 1608.2727272
Subtract 154 from 210 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 14:
560 divided by 77 is 7 with a remainder of 21.
The next digit of our result is 7. 
Result so far: 1608.27272727
If we subtract 539 from 560, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

In conclusion, the division gives 1608.27272727 with a balance of 2.1e-08.