99798710 ÷ 486 
Our goal is to divide 99798710 by 486.

Step 1:
When dividing 9 by 486, we get 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 486

On to step 2:
486 goes into 99 0 times with a remainder of 99.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 99 and we're left with 99.
Include the next digit (7) from the dividend after 99, then repeat: 997 / 486

On to step 3:
486 can be fit into 997 2 times, resulting in a remainder of 25.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 972 from 997 leaves us with 25.
Include the next digit (9) from the dividend after 25, then repeat: 259 / 486

Going ahead to step 4:
The number 486 fits into 259 0 times, leaving a remainder of 259.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
If we subtract 0 from 259, we get 259.
Fetch the next digit (8) from the dividend, attach it to 259 and continue: 2598 / 486

On to step 5:
486 can be fit into 2598 5 times, resulting in a remainder of 168.
The number 5 becomes the next digit in our result. 
Result so far: 205.0
Subtracting 2430 from 2598 leaves us with 168.
Append the next digit (7) from the dividend to 168 and continue with: 1687 / 486

Going ahead to step 6:
When dividing 1687 by 486, we get 3 with a remainder of 229.
Put 3 as the next digit of the answer. 
Result so far: 2053.0
Subtracting 1458 from 1687 leaves us with 229.
Fetch the next digit (1) from the dividend, attach it to 229 and continue: 2291 / 486

Moving on to step 7:
The number 486 fits into 2291 4 times, leaving a remainder of 347.
Record the quotient 4 as the next digit in the result. 
Result so far: 20534.0
Deduct 1944 from 2291 and we're left with 347.
Include the next digit (0) from the dividend after 347, then repeat: 3470 / 486

Step 8:
If we divide 3470 by 486, we get 7 and a remainder of 68.
The number 7 becomes the next digit in our result. 
Result so far: 205347.0
Subtracting 3402 from 3470 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Step 9:
The number 486 fits into 680 1 times, leaving a remainder of 194.
The number 1 becomes the next digit in our result. 
Result so far: 205347.1
Subtract 486 from 680 to get 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Moving on to step 10:
486 can be fit into 1940 3 times, resulting in a remainder of 482.
Use 3 as the next digit of our solution. 
Result so far: 205347.13
The remainder is 482 after subtracting 1458 from 1940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4820, and continue the process.

Let's proceed to step 11:
If we divide 4820 by 486, we get 9 and a remainder of 446.
Use 9 as the next digit of our solution. 
Result so far: 205347.139
Subtract 4374 from 4820 to get 446.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

Step 12:
When dividing 4460 by 486, we get 9 with a remainder of 86.
Use 9 as the next digit of our solution. 
Result so far: 205347.1399
If we subtract 4374 from 4460, we get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

The final result is 205347.1399 with a remainder of 0.00086.