We divide 51107631 by 80
We're looking to find how many times 80 goes into 51107631.

Going ahead to step 1:
80 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 80

Let's proceed to step 2:
80 goes into 51 0 times with a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Append the next digit (1) from the dividend to 51 and continue with: 511 / 80

Moving on to step 3:
80 goes into 511 6 times with a remainder of 31.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
The remainder is 31 after subtracting 480 from 511.
Bring next digit (0) of the dividend behind the 31 and repeat the process: 310 / 80

Let's proceed to step 4:
If we divide 310 by 80, we get 3 and a remainder of 70.
The next digit of our result is 3. 
Result so far: 63.0
Deduct 240 from 310 and we're left with 70.
Take the next digit (7) from the dividend and append it to 70, then repeat: 707 / 80

Going ahead to step 5:
If we divide 707 by 80, we get 8 and a remainder of 67.
Record the quotient 8 as the next digit in the result. 
Result so far: 638.0
Subtract 640 from 707 to get 67.
Take the next digit (6) from the dividend and append it to 67, then repeat: 676 / 80

Moving on to step 6:
When dividing 676 by 80, we get 8 with a remainder of 36.
The number 8 becomes the next digit in our result. 
Result so far: 6388.0
If we subtract 640 from 676, we get 36.
Append the next digit (3) from the dividend to 36 and continue with: 363 / 80

Let's proceed to step 7:
80 can be fit into 363 4 times, resulting in a remainder of 43.
The next digit of our result is 4. 
Result so far: 63884.0
Subtract 320 from 363 to get 43.
Bring next digit (1) of the dividend behind the 43 and repeat the process: 431 / 80

Moving on to step 8:
If we divide 431 by 80, we get 5 and a remainder of 31.
Put 5 as the next digit of the answer. 
Result so far: 638845.0
The remainder is 31 after subtracting 400 from 431.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 9:
310 divided by 80 is 3 with a remainder of 70.
The number 3 becomes the next digit in our result. 
Result so far: 638845.3
If we subtract 240 from 310, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 10:
If we divide 700 by 80, we get 8 and a remainder of 60.
Write down 8 as next digit of the result. 
Result so far: 638845.38
The remainder is 60 after subtracting 640 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 11:
The number 80 fits into 600 7 times, leaving a remainder of 40.
Record the quotient 7 as the next digit in the result. 
Result so far: 638845.387
Subtracting 560 from 600 leaves us 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.

Going ahead to step 12:
If we divide 400 by 80, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 638845.3875
Subtracting 400 from 400 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 13:
80 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 638845.3875
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 14:
80 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 638845.3875
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 638845.3875, with a leftover of 0.0.