51081562 ÷ 31 
We want to divide 51081562 by 31.

Advancing to step 1:
If we divide 5 by 31, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 31

On to step 2:
If we divide 51 by 31, we get 1 and a remainder of 20.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 31 from 51 leaves us with 20.
Grab the next digit (0) from the dividend, add it to 20, then carry on: 200 / 31

Step 3:
The number 31 fits into 200 6 times, leaving a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Deduct 186 from 200 and we're left with 14.
Take the next digit (8) from the dividend and append it to 14, then repeat: 148 / 31

Let's proceed to step 4:
If we divide 148 by 31, we get 4 and a remainder of 24.
Use 4 as the next digit of our solution. 
Result so far: 164.0
If we take 124 away from 148, we end up with 24.
Bring next digit (1) of the dividend behind the 24 and repeat the process: 241 / 31

Going ahead to step 5:
If we divide 241 by 31, we get 7 and a remainder of 24.
The number 7 becomes the next digit in our result. 
Result so far: 1647.0
If we subtract 217 from 241, we get 24.
Bring next digit (5) of the dividend behind the 24 and repeat the process: 245 / 31

Advancing to step 6:
When dividing 245 by 31, we get 7 with a remainder of 28.
The next digit of our result is 7. 
Result so far: 16477.0
If we take 217 away from 245, we end up with 28.
Append the next digit (6) from the dividend to 28 and continue with: 286 / 31

On to step 7:
If we divide 286 by 31, we get 9 and a remainder of 7.
The next digit of our result is 9. 
Result so far: 164779.0
If we subtract 279 from 286, we get 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 31

Advancing to step 8:
72 divided by 31 is 2 with a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 1647792.0
Deduct 62 from 72 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
If we divide 100 by 31, we get 3 and a remainder of 7.
Put 3 as the next digit of the answer. 
Result so far: 1647792.3
If we subtract 93 from 100, we get 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 10:
31 can be fit into 70 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 1647792.32
Subtracting 62 from 70 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 11:
When dividing 80 by 31, we get 2 with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 1647792.322
The remainder is 18 after subtracting 62 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Our division results in 1647792.322 with a remaining 0.0018.