39725666 ÷ 486 
Let's see how many times 486 fits into 39725666.

Advancing to step 1:
When dividing 3 by 486, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 486

Step 2:
486 goes into 39 0 times with a remainder of 39.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Take the next digit (7) from the dividend and append it to 39, then repeat: 397 / 486

Going ahead to step 3:
486 goes into 397 0 times with a remainder of 397.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 397 leaves us with 397.
Append the next digit (2) from the dividend to 397 and continue with: 3972 / 486

Advancing to step 4:
486 can be fit into 3972 8 times, resulting in a remainder of 84.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtract 3888 from 3972 to get 84.
Grab the next digit (5) from the dividend, add it to 84, then carry on: 845 / 486

Advancing to step 5:
The number 486 fits into 845 1 times, leaving a remainder of 359.
The next digit of our result is 1. 
Result so far: 81.0
Deduct 486 from 845 and we're left with 359.
Grab the next digit (6) from the dividend, add it to 359, then carry on: 3596 / 486

Let's proceed to step 6:
3596 divided by 486 is 7 with a remainder of 194.
Use 7 as the next digit of our solution. 
Result so far: 817.0
The remainder is 194 after subtracting 3402 from 3596.
Grab the next digit (6) from the dividend, add it to 194, then carry on: 1946 / 486

Step 7:
486 goes into 1946 4 times with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 8174.0
Subtract 1944 from 1946 to get 2.
Grab the next digit (6) from the dividend, add it to 2, then carry on: 26 / 486

Step 8:
The number 486 fits into 26 0 times, leaving a remainder of 26.
Put 0 as the next digit of the answer. 
Result so far: 81740.0
Subtracting 0 from 26 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 9:
If we divide 260 by 486, we get 0 and a remainder of 260.
Use 0 as the next digit of our solution. 
Result so far: 81740.0
The remainder is 260 after subtracting 0 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Moving on to step 10:
The number 486 fits into 2600 5 times, leaving a remainder of 170.
Use 5 as the next digit of our solution. 
Result so far: 81740.05
If we take 2430 away from 2600, we end up with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

On to step 11:
When dividing 1700 by 486, we get 3 with a remainder of 242.
Write down 3 as next digit of the result. 
Result so far: 81740.053
If we take 1458 away from 1700, we end up with 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Going ahead to step 12:
2420 divided by 486 is 4 with a remainder of 476.
Write down 4 as next digit of the result. 
Result so far: 81740.0534
Subtract 1944 from 2420 to get 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

Advancing to step 13:
If we divide 4760 by 486, we get 9 and a remainder of 386.
The next digit of our result is 9. 
Result so far: 81740.05349
Subtract 4374 from 4760 to get 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Advancing to step 14:
The number 486 fits into 3860 7 times, leaving a remainder of 458.
The next digit of our result is 7. 
Result so far: 81740.053497
Subtracting 3402 from 3860 leaves us with 458.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

Advancing to step 15:
If we divide 4580 by 486, we get 9 and a remainder of 206.
Record the quotient 9 as the next digit in the result. 
Result so far: 81740.0534979
If we take 4374 away from 4580, we end up with 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Moving on to step 16:
486 goes into 2060 4 times with a remainder of 116.
The next digit of our result is 4. 
Result so far: 81740.05349794
The remainder is 116 after subtracting 1944 from 2060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Our division results in 81740.05349794 with a remaining 1.16e-07.