We're dividing 51150334 by 631 
We want to divide 51150334 by 631.

Moving on to step 1:
The number 631 fits into 5 0 times, leaving a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 631

On to step 2:
631 can be fit into 51 0 times, resulting in a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Fetch the next digit (1) from the dividend, attach it to 51 and continue: 511 / 631

Step 3:
511 divided by 631 is 0 with a remainder of 511.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 511, we end up with 511.
Fetch the next digit (5) from the dividend, attach it to 511 and continue: 5115 / 631

Step 4:
If we divide 5115 by 631, we get 8 and a remainder of 67.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
The remainder is 67 after subtracting 5048 from 5115.
Include the next digit (0) from the dividend after 67, then repeat: 670 / 631

Advancing to step 5:
If we divide 670 by 631, we get 1 and a remainder of 39.
The next digit of our result is 1. 
Result so far: 81.0
The remainder is 39 after subtracting 631 from 670.
Append the next digit (3) from the dividend to 39 and continue with: 393 / 631

Step 6:
If we divide 393 by 631, we get 0 and a remainder of 393.
The next digit of our result is 0. 
Result so far: 810.0
Subtract 0 from 393 to get 393.
Grab the next digit (3) from the dividend, add it to 393, then carry on: 3933 / 631

Advancing to step 7:
When dividing 3933 by 631, we get 6 with a remainder of 147.
Write down 6 as next digit of the result. 
Result so far: 8106.0
If we take 3786 away from 3933, we end up with 147.
Take the next digit (4) from the dividend and append it to 147, then repeat: 1474 / 631

Advancing to step 8:
631 can be fit into 1474 2 times, resulting in a remainder of 212.
The next digit of our result is 2. 
Result so far: 81062.0
If we take 1262 away from 1474, we end up with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Moving on to step 9:
If we divide 2120 by 631, we get 3 and a remainder of 227.
Use 3 as the next digit of our solution. 
Result so far: 81062.3
If we take 1893 away from 2120, we end up with 227.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Step 10:
The number 631 fits into 2270 3 times, leaving a remainder of 377.
Put 3 as the next digit of the answer. 
Result so far: 81062.33
Subtract 1893 from 2270 to get 377.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3770, and continue the process.

The final result is 81062.33 with a remainder of 0.377.