51680940 ÷ 486 
We want to divide 51680940 by 486.

Going ahead to step 1:
486 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 486

Moving on to step 2:
486 goes into 51 0 times with a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Fetch the next digit (6) from the dividend, attach it to 51 and continue: 516 / 486

Advancing to step 3:
The number 486 fits into 516 1 times, leaving a remainder of 30.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 486 from 516, we get 30.
Grab the next digit (8) from the dividend, add it to 30, then carry on: 308 / 486

Step 4:
If we divide 308 by 486, we get 0 and a remainder of 308.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we subtract 0 from 308, we get 308.
Take the next digit (0) from the dividend and append it to 308, then repeat: 3080 / 486

Let's proceed to step 5:
486 can be fit into 3080 6 times, resulting in a remainder of 164.
The next digit of our result is 6. 
Result so far: 106.0
If we take 2916 away from 3080, we end up with 164.
Grab the next digit (9) from the dividend, add it to 164, then carry on: 1649 / 486

On to step 6:
When dividing 1649 by 486, we get 3 with a remainder of 191.
Use 3 as the next digit of our solution. 
Result so far: 1063.0
Deduct 1458 from 1649 and we're left with 191.
Take the next digit (4) from the dividend and append it to 191, then repeat: 1914 / 486

Advancing to step 7:
The number 486 fits into 1914 3 times, leaving a remainder of 456.
Record the quotient 3 as the next digit in the result. 
Result so far: 10633.0
Subtract 1458 from 1914 to get 456.
Take the next digit (0) from the dividend and append it to 456, then repeat: 4560 / 486

Going ahead to step 8:
486 goes into 4560 9 times with a remainder of 186.
Write down 9 as next digit of the result. 
Result so far: 106339.0
If we take 4374 away from 4560, we end up with 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

On to step 9:
486 goes into 1860 3 times with a remainder of 402.
The number 3 becomes the next digit in our result. 
Result so far: 106339.3
Deduct 1458 from 1860 and we're left with 402.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

Going ahead to step 10:
4020 divided by 486 is 8 with a remainder of 132.
The next digit of our result is 8. 
Result so far: 106339.38
Subtracting 3888 from 4020 leaves us with 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Step 11:
486 can be fit into 1320 2 times, resulting in a remainder of 348.
Write down 2 as next digit of the result. 
Result so far: 106339.382
If we subtract 972 from 1320, we get 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

On to step 12:
The number 486 fits into 3480 7 times, leaving a remainder of 78.
Write down 7 as next digit of the result. 
Result so far: 106339.3827
Deduct 3402 from 3480 and we're left with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Step 13:
When dividing 780 by 486, we get 1 with a remainder of 294.
Use 1 as the next digit of our solution. 
Result so far: 106339.38271
Deduct 486 from 780 and we're left with 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Moving on to step 14:
The number 486 fits into 2940 6 times, leaving a remainder of 24.
Put 6 as the next digit of the answer. 
Result so far: 106339.382716
Subtract 2916 from 2940 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 15:
If we divide 240 by 486, we get 0 and a remainder of 240.
The number 0 becomes the next digit in our result. 
Result so far: 106339.382716
Subtracting 0 from 240 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 16:
486 can be fit into 2400 4 times, resulting in a remainder of 456.
Record the quotient 4 as the next digit in the result. 
Result so far: 106339.38271604
Subtracting 1944 from 2400 leaves us with 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

After the division, we end up with 106339.38271604 and a remainder of 4.56e-07.