99428190 ÷ 488 
Our goal is to divide 99428190 by 488.

Going ahead to step 1:
488 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 488

Let's proceed to step 2:
If we divide 99 by 488, we get 0 and a remainder of 99.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 99, we get 99.
Include the next digit (4) from the dividend after 99, then repeat: 994 / 488

Step 3:
994 divided by 488 is 2 with a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 976 from 994 leaves us with 18.
Take the next digit (2) from the dividend and append it to 18, then repeat: 182 / 488

Moving on to step 4:
488 goes into 182 0 times with a remainder of 182.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
If we subtract 0 from 182, we get 182.
Append the next digit (8) from the dividend to 182 and continue with: 1828 / 488

Step 5:
If we divide 1828 by 488, we get 3 and a remainder of 364.
Write down 3 as next digit of the result. 
Result so far: 203.0
Subtract 1464 from 1828 to get 364.
Take the next digit (1) from the dividend and append it to 364, then repeat: 3641 / 488

On to step 6:
If we divide 3641 by 488, we get 7 and a remainder of 225.
The number 7 becomes the next digit in our result. 
Result so far: 2037.0
Deduct 3416 from 3641 and we're left with 225.
Append the next digit (9) from the dividend to 225 and continue with: 2259 / 488

Going ahead to step 7:
2259 divided by 488 is 4 with a remainder of 307.
Record the quotient 4 as the next digit in the result. 
Result so far: 20374.0
Subtracting 1952 from 2259 leaves us with 307.
Include the next digit (0) from the dividend after 307, then repeat: 3070 / 488

Moving on to step 8:
The number 488 fits into 3070 6 times, leaving a remainder of 142.
Put 6 as the next digit of the answer. 
Result so far: 203746.0
Deduct 2928 from 3070 and we're left with 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

On to step 9:
488 goes into 1420 2 times with a remainder of 444.
Write down 2 as next digit of the result. 
Result so far: 203746.2
If we subtract 976 from 1420, we get 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Going ahead to step 10:
The number 488 fits into 4440 9 times, leaving a remainder of 48.
Use 9 as the next digit of our solution. 
Result so far: 203746.29
If we subtract 4392 from 4440, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 11:
The number 488 fits into 480 0 times, leaving a remainder of 480.
Write down 0 as next digit of the result. 
Result so far: 203746.29
The remainder is 480 after subtracting 0 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Step 12:
If we divide 4800 by 488, we get 9 and a remainder of 408.
Put 9 as the next digit of the answer. 
Result so far: 203746.2909
Subtract 4392 from 4800 to get 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

On to step 13:
4080 divided by 488 is 8 with a remainder of 176.
The next digit of our result is 8. 
Result so far: 203746.29098
If we subtract 3904 from 4080, we get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Going ahead to step 14:
If we divide 1760 by 488, we get 3 and a remainder of 296.
Record the quotient 3 as the next digit in the result. 
Result so far: 203746.290983
Subtract 1464 from 1760 to get 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Moving on to step 15:
When dividing 2960 by 488, we get 6 with a remainder of 32.
The next digit of our result is 6. 
Result so far: 203746.2909836
The remainder is 32 after subtracting 2928 from 2960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 16:
When dividing 320 by 488, we get 0 with a remainder of 320.
Record the quotient 0 as the next digit in the result. 
Result so far: 203746.2909836
If we take 0 away from 320, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

The final outcome is 203746.2909836, with a leftover of 3.2e-07.