Let's divide 215566 by 51
Let's see how many times 51 fits into 215566.

Moving on to step 1:
If we divide 2 by 51, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 51

Step 2:
51 goes into 21 0 times with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Grab the next digit (5) from the dividend, add it to 21, then carry on: 215 / 51

Moving on to step 3:
If we divide 215 by 51, we get 4 and a remainder of 11.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 204 from 215 and we're left with 11.
Include the next digit (5) from the dividend after 11, then repeat: 115 / 51

Advancing to step 4:
The number 51 fits into 115 2 times, leaving a remainder of 13.
Write down 2 as next digit of the result. 
Result so far: 42.0
If we take 102 away from 115, we end up with 13.
Append the next digit (6) from the dividend to 13 and continue with: 136 / 51

Step 5:
51 goes into 136 2 times with a remainder of 34.
Use 2 as the next digit of our solution. 
Result so far: 422.0
Subtracting 102 from 136 leaves us with 34.
Grab the next digit (6) from the dividend, add it to 34, then carry on: 346 / 51

Advancing to step 6:
51 goes into 346 6 times with a remainder of 40.
Use 6 as the next digit of our solution. 
Result so far: 4226.0
If we subtract 306 from 346, 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.

Going ahead to step 7:
The number 51 fits into 400 7 times, leaving a remainder of 43.
The number 7 becomes the next digit in our result. 
Result so far: 4226.7
If we subtract 357 from 400, we 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.

Advancing to step 8:
430 divided by 51 is 8 with a remainder of 22.
The next digit of our result is 8. 
Result so far: 4226.78
If we take 408 away from 430, 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 9:
When dividing 220 by 51, we get 4 with a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 4226.784
If we subtract 204 from 220, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 10:
When dividing 160 by 51, we get 3 with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 4226.7843
If we take 153 away from 160, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 11:
51 goes into 70 1 times with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 4226.78431
The remainder is 19 after subtracting 51 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 12:
51 goes into 190 3 times with a remainder of 37.
Record the quotient 3 as the next digit in the result. 
Result so far: 4226.784313
The remainder is 37 after subtracting 153 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 13:
When dividing 370 by 51, we get 7 with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 4226.7843137
Subtract 357 from 370 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 14:
When dividing 130 by 51, we get 2 with a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 4226.78431372
If we take 102 away from 130, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

After the division, we end up with 4226.78431372 and a remainder of 2.8e-08.