We look at the division of 153420 by 57 
We want to figure out the number of times 153420 can be divided by 57.

Going ahead to step 1:
When dividing 1 by 57, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 57

On to step 2:
15 divided by 57 is 0 with a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Include the next digit (3) from the dividend after 15, then repeat: 153 / 57

On to step 3:
The number 57 fits into 153 2 times, leaving a remainder of 39.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 114 from 153, we get 39.
Append the next digit (4) from the dividend to 39 and continue with: 394 / 57

Advancing to step 4:
If we divide 394 by 57, we get 6 and a remainder of 52.
The next digit of our result is 6. 
Result so far: 26.0
If we subtract 342 from 394, we get 52.
Append the next digit (2) from the dividend to 52 and continue with: 522 / 57

Step 5:
57 can be fit into 522 9 times, resulting in a remainder of 9.
The next digit of our result is 9. 
Result so far: 269.0
Deduct 513 from 522 and we're left with 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 57

Going ahead to step 6:
When dividing 90 by 57, we get 1 with a remainder of 33.
Use 1 as the next digit of our solution. 
Result so far: 2691.0
If we subtract 57 from 90, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 7:
When dividing 330 by 57, we get 5 with a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 2691.5
Deduct 285 from 330 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 8:
The number 57 fits into 450 7 times, leaving a remainder of 51.
The next digit of our result is 7. 
Result so far: 2691.57
If we subtract 399 from 450, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 9:
510 divided by 57 is 8 with a remainder of 54.
The next digit of our result is 8. 
Result so far: 2691.578
Deduct 456 from 510 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 10:
57 goes into 540 9 times with a remainder of 27.
Write down 9 as next digit of the result. 
Result so far: 2691.5789
If we take 513 away from 540, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 11:
If we divide 270 by 57, we get 4 and a remainder of 42.
The number 4 becomes the next digit in our result. 
Result so far: 2691.57894
Deduct 228 from 270 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 12:
If we divide 420 by 57, we get 7 and a remainder of 21.
Use 7 as the next digit of our solution. 
Result so far: 2691.578947
If we subtract 399 from 420, 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.

Advancing to step 13:
57 goes into 210 3 times with a remainder of 39.
Use 3 as the next digit of our solution. 
Result so far: 2691.5789473
If we subtract 171 from 210, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Going ahead to step 14:
57 can be fit into 390 6 times, resulting in a remainder of 48.
Write down 6 as next digit of the result. 
Result so far: 2691.57894736
Subtract 342 from 390 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

After the division, we end up with 2691.57894736 and a remainder of 4.8e-08.