Let's divide 215757 by 42
We want to figure out the number of times 215757 can be divided by 42.

Going ahead to step 1:
The number 42 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 42

Going ahead to step 2:
If we divide 21 by 42, we get 0 and a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Grab the next digit (5) from the dividend, add it to 21, then carry on: 215 / 42

Step 3:
42 goes into 215 5 times with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
The remainder is 5 after subtracting 210 from 215.
Grab the next digit (7) from the dividend, add it to 5, then carry on: 57 / 42

Advancing to step 4:
42 can be fit into 57 1 times, resulting in a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 51.0
Subtract 42 from 57 to get 15.
Bring next digit (5) of the dividend behind the 15 and repeat the process: 155 / 42

Let's proceed to step 5:
42 can be fit into 155 3 times, resulting in a remainder of 29.
Use 3 as the next digit of our solution. 
Result so far: 513.0
Subtracting 126 from 155 leaves us with 29.
Take the next digit (7) from the dividend and append it to 29, then repeat: 297 / 42

On to step 6:
When dividing 297 by 42, we get 7 with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 5137.0
If we take 294 away from 297, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 7:
30 divided by 42 is 0 with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 5137.0
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 8:
42 can be fit into 300 7 times, resulting in a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 5137.07
If we subtract 294 from 300, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 9:
The number 42 fits into 60 1 times, leaving a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 5137.071
Subtracting 42 from 60 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 10:
If we divide 180 by 42, we get 4 and a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 5137.0714
Subtract 168 from 180 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 11:
When dividing 120 by 42, we get 2 with a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 5137.07142
If we take 84 away from 120, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 12:
If we divide 360 by 42, we get 8 and a remainder of 24.
The number 8 becomes the next digit in our result. 
Result so far: 5137.071428
Subtract 336 from 360 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 13:
240 divided by 42 is 5 with a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 5137.0714285
Deduct 210 from 240 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 14:
42 goes into 300 7 times with a remainder of 6.
The next digit of our result is 7. 
Result so far: 5137.07142857
Subtract 294 from 300 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final outcome is 5137.07142857, with a leftover of 6e-09.