17909196 ÷ 210 
We're looking to find how many times 210 goes into 17909196.

Going ahead to step 1:
1 divided by 210 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 210

Going ahead to step 2:
The number 210 fits into 17 0 times, leaving a remainder of 17.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 17 to get 17.
Append the next digit (9) from the dividend to 17 and continue with: 179 / 210

Going ahead to step 3:
210 goes into 179 0 times with a remainder of 179.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 179 and we're left with 179.
Grab the next digit (0) from the dividend, add it to 179, then carry on: 1790 / 210

Step 4:
The number 210 fits into 1790 8 times, leaving a remainder of 110.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Deduct 1680 from 1790 and we're left with 110.
Grab the next digit (9) from the dividend, add it to 110, then carry on: 1109 / 210

Let's proceed to step 5:
210 can be fit into 1109 5 times, resulting in a remainder of 59.
Write down 5 as next digit of the result. 
Result so far: 85.0
The remainder is 59 after subtracting 1050 from 1109.
Grab the next digit (1) from the dividend, add it to 59, then carry on: 591 / 210

On to step 6:
If we divide 591 by 210, we get 2 and a remainder of 171.
The number 2 becomes the next digit in our result. 
Result so far: 852.0
If we take 420 away from 591, we end up with 171.
Bring next digit (9) of the dividend behind the 171 and repeat the process: 1719 / 210

Going ahead to step 7:
The number 210 fits into 1719 8 times, leaving a remainder of 39.
The number 8 becomes the next digit in our result. 
Result so far: 8528.0
Subtract 1680 from 1719 to get 39.
Append the next digit (6) from the dividend to 39 and continue with: 396 / 210

Let's proceed to step 8:
210 goes into 396 1 times with a remainder of 186.
Write down 1 as next digit of the result. 
Result so far: 85281.0
Subtracting 210 from 396 leaves us with 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Advancing to step 9:
The number 210 fits into 1860 8 times, leaving a remainder of 180.
Write down 8 as next digit of the result. 
Result so far: 85281.8
If we take 1680 away from 1860, we end up with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

On to step 10:
210 can be fit into 1800 8 times, resulting in a remainder of 120.
Use 8 as the next digit of our solution. 
Result so far: 85281.88
Deduct 1680 from 1800 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Our division results in 85281.88 with a remaining 0.12.