21015109 ÷ 247 
We're looking to find how many times 247 goes into 21015109.

Going ahead to step 1:
The number 247 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 247

On to step 2:
247 can be fit into 21 0 times, resulting in a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Include the next digit (0) from the dividend after 21, then repeat: 210 / 247

Step 3:
247 can be fit into 210 0 times, resulting in a remainder of 210.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 210, we get 210.
Bring next digit (1) of the dividend behind the 210 and repeat the process: 2101 / 247

Going ahead to step 4:
The number 247 fits into 2101 8 times, leaving a remainder of 125.
Put 8 as the next digit of the answer. 
Result so far: 8.0
If we take 1976 away from 2101, we end up with 125.
Take the next digit (5) from the dividend and append it to 125, then repeat: 1255 / 247

Moving on to step 5:
If we divide 1255 by 247, we get 5 and a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 85.0
The remainder is 20 after subtracting 1235 from 1255.
Fetch the next digit (1) from the dividend, attach it to 20 and continue: 201 / 247

Moving on to step 6:
247 can be fit into 201 0 times, resulting in a remainder of 201.
Record the quotient 0 as the next digit in the result. 
Result so far: 850.0
Subtracting 0 from 201 leaves us with 201.
Grab the next digit (0) from the dividend, add it to 201, then carry on: 2010 / 247

Advancing to step 7:
247 can be fit into 2010 8 times, resulting in a remainder of 34.
Write down 8 as next digit of the result. 
Result so far: 8508.0
Subtracting 1976 from 2010 leaves us with 34.
Append the next digit (9) from the dividend to 34 and continue with: 349 / 247

Let's proceed to step 8:
If we divide 349 by 247, we get 1 and a remainder of 102.
Use 1 as the next digit of our solution. 
Result so far: 85081.0
Subtracting 247 from 349 leaves us with 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Going ahead to step 9:
247 can be fit into 1020 4 times, resulting in a remainder of 32.
Use 4 as the next digit of our solution. 
Result so far: 85081.4
If we subtract 988 from 1020, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 10:
The number 247 fits into 320 1 times, leaving a remainder of 73.
Use 1 as the next digit of our solution. 
Result so far: 85081.41
If we subtract 247 from 320, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Step 11:
When dividing 730 by 247, we get 2 with a remainder of 236.
Record the quotient 2 as the next digit in the result. 
Result so far: 85081.412
The remainder is 236 after subtracting 494 from 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Step 12:
247 can be fit into 2360 9 times, resulting in a remainder of 137.
Record the quotient 9 as the next digit in the result. 
Result so far: 85081.4129
If we subtract 2223 from 2360, we get 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

Let's proceed to step 13:
When dividing 1370 by 247, we get 5 with a remainder of 135.
The next digit of our result is 5. 
Result so far: 85081.41295
If we take 1235 away from 1370, we end up with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

On to step 14:
If we divide 1350 by 247, we get 5 and a remainder of 115.
The number 5 becomes the next digit in our result. 
Result so far: 85081.412955
The remainder is 115 after subtracting 1235 from 1350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

The quotient of the division is 85081.412955, and the remainder is 1.15e-05.