Let's divide 90728248 by 210
We're looking to find how many times 210 goes into 90728248.

Going ahead to step 1:
If we divide 9 by 210, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 210

Let's proceed to step 2:
When dividing 90 by 210, we get 0 with a remainder of 90.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 90, we end up with 90.
Include the next digit (7) from the dividend after 90, then repeat: 907 / 210

Step 3:
210 can be fit into 907 4 times, resulting in a remainder of 67.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
The remainder is 67 after subtracting 840 from 907.
Bring next digit (2) of the dividend behind the 67 and repeat the process: 672 / 210

Advancing to step 4:
210 goes into 672 3 times with a remainder of 42.
The next digit of our result is 3. 
Result so far: 43.0
Subtract 630 from 672 to get 42.
Take the next digit (8) from the dividend and append it to 42, then repeat: 428 / 210

Moving on to step 5:
210 goes into 428 2 times with a remainder of 8.
The next digit of our result is 2. 
Result so far: 432.0
Subtracting 420 from 428 leaves us with 8.
Fetch the next digit (2) from the dividend, attach it to 8 and continue: 82 / 210

Let's proceed to step 6:
When dividing 82 by 210, we get 0 with a remainder of 82.
Put 0 as the next digit of the answer. 
Result so far: 4320.0
Subtracting 0 from 82 leaves us with 82.
Fetch the next digit (4) from the dividend, attach it to 82 and continue: 824 / 210

Advancing to step 7:
824 divided by 210 is 3 with a remainder of 194.
Record the quotient 3 as the next digit in the result. 
Result so far: 43203.0
Subtract 630 from 824 to get 194.
Take the next digit (8) from the dividend and append it to 194, then repeat: 1948 / 210

Step 8:
210 goes into 1948 9 times with a remainder of 58.
Record the quotient 9 as the next digit in the result. 
Result so far: 432039.0
The remainder is 58 after subtracting 1890 from 1948.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 9:
210 can be fit into 580 2 times, resulting in a remainder of 160.
Put 2 as the next digit of the answer. 
Result so far: 432039.2
If we take 420 away from 580, we end up with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 10:
210 goes into 1600 7 times with a remainder of 130.
Put 7 as the next digit of the answer. 
Result so far: 432039.27
Deduct 1470 from 1600 and we're left with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Going ahead to step 11:
210 goes into 1300 6 times with a remainder of 40.
Record the quotient 6 as the next digit in the result. 
Result so far: 432039.276
Deduct 1260 from 1300 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 12:
210 can be fit into 400 1 times, resulting in a remainder of 190.
Use 1 as the next digit of our solution. 
Result so far: 432039.2761
If we subtract 210 from 400, we get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Step 13:
The number 210 fits into 1900 9 times, leaving a remainder of 10.
The next digit of our result is 9. 
Result so far: 432039.27619
If we subtract 1890 from 1900, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 14:
When dividing 100 by 210, we get 0 with a remainder of 100.
Write down 0 as next digit of the result. 
Result so far: 432039.27619
Subtract 0 from 100 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

On to step 15:
The number 210 fits into 1000 4 times, leaving a remainder of 160.
Record the quotient 4 as the next digit in the result. 
Result so far: 432039.2761904
If we subtract 840 from 1000, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 16:
When dividing 1600 by 210, we get 7 with a remainder of 130.
Write down 7 as next digit of the result. 
Result so far: 432039.27619047
The remainder is 130 after subtracting 1470 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

The final outcome is 432039.27619047, with a leftover of 1.3e-07.