Let's divide 87313111 by 51
Let's see how many times 51 fits into 87313111.

On to step 1:
The number 51 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 51

Step 2:
The number 51 fits into 87 1 times, leaving a remainder of 36.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 51 away from 87, we end up with 36.
Take the next digit (3) from the dividend and append it to 36, then repeat: 363 / 51

Step 3:
51 goes into 363 7 times with a remainder of 6.
Write down 7 as next digit of the result. 
Result so far: 17.0
The remainder is 6 after subtracting 357 from 363.
Take the next digit (1) from the dividend and append it to 6, then repeat: 61 / 51

Going ahead to step 4:
If we divide 61 by 51, we get 1 and a remainder of 10.
The next digit of our result is 1. 
Result so far: 171.0
If we take 51 away from 61, we end up with 10.
Grab the next digit (3) from the dividend, add it to 10, then carry on: 103 / 51

Advancing to step 5:
If we divide 103 by 51, we get 2 and a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 1712.0
The remainder is 1 after subtracting 102 from 103.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 51

On to step 6:
51 goes into 11 0 times with a remainder of 11.
Record the quotient 0 as the next digit in the result. 
Result so far: 17120.0
If we take 0 away from 11, we end up with 11.
Fetch the next digit (1) from the dividend, attach it to 11 and continue: 111 / 51

Step 7:
51 goes into 111 2 times with a remainder of 9.
The next digit of our result is 2. 
Result so far: 171202.0
If we subtract 102 from 111, we get 9.
Fetch the next digit (1) from the dividend, attach it to 9 and continue: 91 / 51

Let's proceed to step 8:
If we divide 91 by 51, we get 1 and a remainder of 40.
The number 1 becomes the next digit in our result. 
Result so far: 1712021.0
Deduct 51 from 91 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 9:
If we divide 400 by 51, we get 7 and a remainder of 43.
Put 7 as the next digit of the answer. 
Result so far: 1712021.7
Subtracting 357 from 400 leaves us with 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 10:
If we divide 430 by 51, we get 8 and a remainder of 22.
The next digit of our result is 8. 
Result so far: 1712021.78
Subtract 408 from 430 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 11:
When dividing 220 by 51, we get 4 with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 1712021.784
Subtracting 204 from 220 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 12:
When dividing 160 by 51, we get 3 with a remainder of 7.
The next digit of our result is 3. 
Result so far: 1712021.7843
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 13:
When dividing 70 by 51, we get 1 with a remainder of 19.
The next digit of our result is 1. 
Result so far: 1712021.78431
If we take 51 away from 70, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 14:
The number 51 fits into 190 3 times, leaving a remainder of 37.
Put 3 as the next digit of the answer. 
Result so far: 1712021.784313
Subtract 153 from 190 to get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 15:
When dividing 370 by 51, we get 7 with a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 1712021.7843137
Subtracting 357 from 370 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 16:
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: 1712021.78431372
If we subtract 102 from 130, we get 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 1712021.78431372 and a remainder of 2.8e-08.