We divide 353840 by 57
The aim is to understand the frequency of 57 in 353840.

Moving on to step 1:
57 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 57

Moving on to step 2:
If we divide 35 by 57, we get 0 and a remainder of 35.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 35 leaves us with 35.
Include the next digit (3) from the dividend after 35, then repeat: 353 / 57

Moving on to step 3:
When dividing 353 by 57, we get 6 with a remainder of 11.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we take 342 away from 353, we end up with 11.
Fetch the next digit (8) from the dividend, attach it to 11 and continue: 118 / 57

Advancing to step 4:
118 divided by 57 is 2 with a remainder of 4.
The next digit of our result is 2. 
Result so far: 62.0
Subtracting 114 from 118 leaves us with 4.
Grab the next digit (4) from the dividend, add it to 4, then carry on: 44 / 57

Let's proceed to step 5:
57 goes into 44 0 times with a remainder of 44.
The number 0 becomes the next digit in our result. 
Result so far: 620.0
Subtract 0 from 44 to get 44.
Grab the next digit (0) from the dividend, add it to 44, then carry on: 440 / 57

Let's proceed to step 6:
The number 57 fits into 440 7 times, leaving a remainder of 41.
Record the quotient 7 as the next digit in the result. 
Result so far: 6207.0
If we take 399 away from 440, we end up with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 7:
57 can be fit into 410 7 times, resulting in a remainder of 11.
Put 7 as the next digit of the answer. 
Result so far: 6207.7
Subtract 399 from 410 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 8:
When dividing 110 by 57, we get 1 with a remainder of 53.
The number 1 becomes the next digit in our result. 
Result so far: 6207.71
If we subtract 57 from 110, we get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 9:
If we divide 530 by 57, we get 9 and a remainder of 17.
The number 9 becomes the next digit in our result. 
Result so far: 6207.719
The remainder is 17 after subtracting 513 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 10:
The number 57 fits into 170 2 times, leaving a remainder of 56.
Use 2 as the next digit of our solution. 
Result so far: 6207.7192
The remainder is 56 after subtracting 114 from 170.
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 11:
560 divided by 57 is 9 with a remainder of 47.
The next digit of our result is 9. 
Result so far: 6207.71929
If we subtract 513 from 560, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 12:
When dividing 470 by 57, we get 8 with a remainder of 14.
Record the quotient 8 as the next digit in the result. 
Result so far: 6207.719298
If we take 456 away from 470, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 13:
If we divide 140 by 57, we get 2 and a remainder of 26.
The next digit of our result is 2. 
Result so far: 6207.7192982
Subtracting 114 from 140 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 14:
260 divided by 57 is 4 with a remainder of 32.
Use 4 as the next digit of our solution. 
Result so far: 6207.71929824
Deduct 228 from 260 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

After the division, we end up with 6207.71929824 and a remainder of 3.2e-08.