99640488 ÷ 492 
We want to divide 99640488 by 492.

Advancing to step 1:
When dividing 9 by 492, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 492

Advancing to step 2:
If we divide 99 by 492, we get 0 and a remainder of 99.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 99, we end up with 99.
Take the next digit (6) from the dividend and append it to 99, then repeat: 996 / 492

Going ahead to step 3:
492 goes into 996 2 times with a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 984 from 996 to get 12.
Take the next digit (4) from the dividend and append it to 12, then repeat: 124 / 492

Going ahead to step 4:
492 can be fit into 124 0 times, resulting in a remainder of 124.
The next digit of our result is 0. 
Result so far: 20.0
Subtract 0 from 124 to get 124.
Take the next digit (0) from the dividend and append it to 124, then repeat: 1240 / 492

Advancing to step 5:
When dividing 1240 by 492, we get 2 with a remainder of 256.
Record the quotient 2 as the next digit in the result. 
Result so far: 202.0
If we take 984 away from 1240, we end up with 256.
Append the next digit (4) from the dividend to 256 and continue with: 2564 / 492

Let's proceed to step 6:
2564 divided by 492 is 5 with a remainder of 104.
Write down 5 as next digit of the result. 
Result so far: 2025.0
The remainder is 104 after subtracting 2460 from 2564.
Bring next digit (8) of the dividend behind the 104 and repeat the process: 1048 / 492

Let's proceed to step 7:
If we divide 1048 by 492, we get 2 and a remainder of 64.
Write down 2 as next digit of the result. 
Result so far: 20252.0
Subtracting 984 from 1048 leaves us with 64.
Bring next digit (8) of the dividend behind the 64 and repeat the process: 648 / 492

Let's proceed to step 8:
When dividing 648 by 492, we get 1 with a remainder of 156.
Record the quotient 1 as the next digit in the result. 
Result so far: 202521.0
Subtract 492 from 648 to get 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Going ahead to step 9:
492 can be fit into 1560 3 times, resulting in a remainder of 84.
Put 3 as the next digit of the answer. 
Result so far: 202521.3
The remainder is 84 after subtracting 1476 from 1560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Step 10:
The number 492 fits into 840 1 times, leaving a remainder of 348.
Use 1 as the next digit of our solution. 
Result so far: 202521.31
Subtract 492 from 840 to 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.

Advancing to step 11:
492 goes into 3480 7 times with a remainder of 36.
The next digit of our result is 7. 
Result so far: 202521.317
Deduct 3444 from 3480 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 12:
If we divide 360 by 492, we get 0 and a remainder of 360.
Put 0 as the next digit of the answer. 
Result so far: 202521.317
Subtract 0 from 360 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Going ahead to step 13:
492 goes into 3600 7 times with a remainder of 156.
Record the quotient 7 as the next digit in the result. 
Result so far: 202521.31707
Deduct 3444 from 3600 and we're left with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Advancing to step 14:
492 can be fit into 1560 3 times, resulting in a remainder of 84.
The next digit of our result is 3. 
Result so far: 202521.317073
Subtracting 1476 from 1560 leaves us with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 15:
492 can be fit into 840 1 times, resulting in a remainder of 348.
The number 1 becomes the next digit in our result. 
Result so far: 202521.3170731
Deduct 492 from 840 and we're left with 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

Going ahead to step 16:
3480 divided by 492 is 7 with a remainder of 36.
Record the quotient 7 as the next digit in the result. 
Result so far: 202521.31707317
Subtracting 3444 from 3480 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The final outcome is 202521.31707317, with a leftover of 3.6e-08.