We're dividing 99580718 by 210 
We're looking to find how many times 210 goes into 99580718.

Let's proceed to step 1:
If we divide 9 by 210, we get 0 and a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 210

On to step 2:
210 goes into 99 0 times with a remainder of 99.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 99, we get 99.
Append the next digit (5) from the dividend to 99 and continue with: 995 / 210

Step 3:
The number 210 fits into 995 4 times, leaving a remainder of 155.
Use 4 as the next digit of our solution. 
Result so far: 4.0
The remainder is 155 after subtracting 840 from 995.
Bring next digit (8) of the dividend behind the 155 and repeat the process: 1558 / 210

On to step 4:
If we divide 1558 by 210, we get 7 and a remainder of 88.
Write down 7 as next digit of the result. 
Result so far: 47.0
Subtracting 1470 from 1558 leaves us with 88.
Bring next digit (0) of the dividend behind the 88 and repeat the process: 880 / 210

Step 5:
210 can be fit into 880 4 times, resulting in a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 474.0
Deduct 840 from 880 and we're left with 40.
Include the next digit (7) from the dividend after 40, then repeat: 407 / 210

On to step 6:
When dividing 407 by 210, we get 1 with a remainder of 197.
Put 1 as the next digit of the answer. 
Result so far: 4741.0
Subtract 210 from 407 to get 197.
Grab the next digit (1) from the dividend, add it to 197, then carry on: 1971 / 210

Going ahead to step 7:
If we divide 1971 by 210, we get 9 and a remainder of 81.
Put 9 as the next digit of the answer. 
Result so far: 47419.0
The remainder is 81 after subtracting 1890 from 1971.
Grab the next digit (8) from the dividend, add it to 81, then carry on: 818 / 210

Moving on to step 8:
210 can be fit into 818 3 times, resulting in a remainder of 188.
The number 3 becomes the next digit in our result. 
Result so far: 474193.0
Subtracting 630 from 818 leaves us with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Step 9:
The number 210 fits into 1880 8 times, leaving a remainder of 200.
Write down 8 as next digit of the result. 
Result so far: 474193.8
The remainder is 200 after subtracting 1680 from 1880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 10:
2000 divided by 210 is 9 with a remainder of 110.
The number 9 becomes the next digit in our result. 
Result so far: 474193.89
Deduct 1890 from 2000 and we're left with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

On to step 11:
The number 210 fits into 1100 5 times, leaving a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 474193.895
The remainder is 50 after subtracting 1050 from 1100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 12:
If we divide 500 by 210, we get 2 and a remainder of 80.
Write down 2 as next digit of the result. 
Result so far: 474193.8952
If we take 420 away from 500, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 13:
800 divided by 210 is 3 with a remainder of 170.
The next digit of our result is 3. 
Result so far: 474193.89523
Deduct 630 from 800 and we're left 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.

Advancing to step 14:
If we divide 1700 by 210, we get 8 and a remainder of 20.
The number 8 becomes the next digit in our result. 
Result so far: 474193.895238
Deduct 1680 from 1700 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 15:
210 can be fit into 200 0 times, resulting in a remainder of 200.
Record the quotient 0 as the next digit in the result. 
Result so far: 474193.895238
If we subtract 0 from 200, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 16:
2000 divided by 210 is 9 with a remainder of 110.
The next digit of our result is 9. 
Result so far: 474193.89523809
If we take 1890 away from 2000, we end up with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

In conclusion, the division gives 474193.89523809 with a balance of 1.1e-07.