We look at the division of 720940 by 57 
The aim is to understand the frequency of 57 in 720940.

Going ahead to step 1:
57 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 subtract 0 from 7, we get 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 57

Step 2:
If we divide 72 by 57, we get 1 and a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 15 after subtracting 57 from 72.
Fetch the next digit (0) from the dividend, attach it to 15 and continue: 150 / 57

Advancing to step 3:
150 divided by 57 is 2 with a remainder of 36.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Deduct 114 from 150 and we're left with 36.
Take the next digit (9) from the dividend and append it to 36, then repeat: 369 / 57

Going ahead to step 4:
369 divided by 57 is 6 with a remainder of 27.
Record the quotient 6 as the next digit in the result. 
Result so far: 126.0
Subtract 342 from 369 to get 27.
Fetch the next digit (4) from the dividend, attach it to 27 and continue: 274 / 57

Advancing to step 5:
274 divided by 57 is 4 with a remainder of 46.
Put 4 as the next digit of the answer. 
Result so far: 1264.0
If we take 228 away from 274, we end up with 46.
Append the next digit (0) from the dividend to 46 and continue with: 460 / 57

Let's proceed to step 6:
When dividing 460 by 57, we get 8 with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 12648.0
If we subtract 456 from 460, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 7:
57 can be fit into 40 0 times, resulting in a remainder of 40.
The next digit of our result is 0. 
Result so far: 12648.0
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 8:
If we divide 400 by 57, we get 7 and a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 12648.07
Deduct 399 from 400 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 9:
When dividing 10 by 57, we get 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 12648.07
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 10:
57 goes into 100 1 times with a remainder of 43.
Record the quotient 1 as the next digit in the result. 
Result so far: 12648.0701
Subtract 57 from 100 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 11:
The number 57 fits into 430 7 times, leaving a remainder of 31.
Write down 7 as next digit of the result. 
Result so far: 12648.07017
If we subtract 399 from 430, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 12:
When dividing 310 by 57, we get 5 with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 12648.070175
Subtract 285 from 310 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 13:
57 can be fit into 250 4 times, resulting in a remainder of 22.
Use 4 as the next digit of our solution. 
Result so far: 12648.0701754
If we take 228 away from 250, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 14:
The number 57 fits into 220 3 times, leaving a remainder of 49.
Write down 3 as next digit of the result. 
Result so far: 12648.07017543
Deduct 171 from 220 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

The quotient of the division is 12648.07017543, and the remainder is 4.9e-08.