We're dividing 21981921 by 315 
Let's see how many times 315 fits into 21981921.

Step 1:
2 divided by 315 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 315

Step 2:
When dividing 21 by 315, we get 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Include the next digit (9) from the dividend after 21, then repeat: 219 / 315

Step 3:
219 divided by 315 is 0 with a remainder of 219.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 219 after subtracting 0 from 219.
Fetch the next digit (8) from the dividend, attach it to 219 and continue: 2198 / 315

On to step 4:
2198 divided by 315 is 6 with a remainder of 308.
Write down 6 as next digit of the result. 
Result so far: 6.0
Deduct 1890 from 2198 and we're left with 308.
Bring next digit (1) of the dividend behind the 308 and repeat the process: 3081 / 315

Step 5:
3081 divided by 315 is 9 with a remainder of 246.
Record the quotient 9 as the next digit in the result. 
Result so far: 69.0
The remainder is 246 after subtracting 2835 from 3081.
Grab the next digit (9) from the dividend, add it to 246, then carry on: 2469 / 315

Step 6:
2469 divided by 315 is 7 with a remainder of 264.
Write down 7 as next digit of the result. 
Result so far: 697.0
Subtract 2205 from 2469 to get 264.
Append the next digit (2) from the dividend to 264 and continue with: 2642 / 315

Going ahead to step 7:
The number 315 fits into 2642 8 times, leaving a remainder of 122.
Put 8 as the next digit of the answer. 
Result so far: 6978.0
If we take 2520 away from 2642, we end up with 122.
Take the next digit (1) from the dividend and append it to 122, then repeat: 1221 / 315

Going ahead to step 8:
If we divide 1221 by 315, we get 3 and a remainder of 276.
Write down 3 as next digit of the result. 
Result so far: 69783.0
Subtracting 945 from 1221 leaves us with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Going ahead to step 9:
The number 315 fits into 2760 8 times, leaving a remainder of 240.
Record the quotient 8 as the next digit in the result. 
Result so far: 69783.8
The remainder is 240 after subtracting 2520 from 2760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 10:
2400 divided by 315 is 7 with a remainder of 195.
Record the quotient 7 as the next digit in the result. 
Result so far: 69783.87
Subtract 2205 from 2400 to get 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Step 11:
1950 divided by 315 is 6 with a remainder of 60.
Put 6 as the next digit of the answer. 
Result so far: 69783.876
Subtract 1890 from 1950 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 12:
The number 315 fits into 600 1 times, leaving a remainder of 285.
The next digit of our result is 1. 
Result so far: 69783.8761
Subtracting 315 from 600 leaves us with 285.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Advancing to step 13:
2850 divided by 315 is 9 with a remainder of 15.
Use 9 as the next digit of our solution. 
Result so far: 69783.87619
Subtract 2835 from 2850 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 14:
315 goes into 150 0 times with a remainder of 150.
Write down 0 as next digit of the result. 
Result so far: 69783.87619
Subtracting 0 from 150 leaves us with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Advancing to step 15:
When dividing 1500 by 315, we get 4 with a remainder of 240.
The number 4 becomes the next digit in our result. 
Result so far: 69783.8761904
Deduct 1260 from 1500 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Advancing to step 16:
When dividing 2400 by 315, we get 7 with a remainder of 195.
The next digit of our result is 7. 
Result so far: 69783.87619047
Deduct 2205 from 2400 and we're left with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

After the division, we end up with 69783.87619047 and a remainder of 1.95e-07.