We divide 21309663 by 370
Our goal is to divide 21309663 by 370.

Advancing to step 1:
When dividing 2 by 370, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 370

Step 2:
21 divided by 370 is 0 with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Append the next digit (3) from the dividend to 21 and continue with: 213 / 370

Moving on to step 3:
370 can be fit into 213 0 times, resulting in a remainder of 213.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 213 to get 213.
Append the next digit (0) from the dividend to 213 and continue with: 2130 / 370

Let's proceed to step 4:
When dividing 2130 by 370, we get 5 with a remainder of 280.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we subtract 1850 from 2130, we get 280.
Grab the next digit (9) from the dividend, add it to 280, then carry on: 2809 / 370

On to step 5:
2809 divided by 370 is 7 with a remainder of 219.
Use 7 as the next digit of our solution. 
Result so far: 57.0
Deduct 2590 from 2809 and we're left with 219.
Fetch the next digit (6) from the dividend, attach it to 219 and continue: 2196 / 370

On to step 6:
When dividing 2196 by 370, we get 5 with a remainder of 346.
Write down 5 as next digit of the result. 
Result so far: 575.0
If we take 1850 away from 2196, we end up with 346.
Append the next digit (6) from the dividend to 346 and continue with: 3466 / 370

Moving on to step 7:
3466 divided by 370 is 9 with a remainder of 136.
Write down 9 as next digit of the result. 
Result so far: 5759.0
If we take 3330 away from 3466, we end up with 136.
Fetch the next digit (3) from the dividend, attach it to 136 and continue: 1363 / 370

Step 8:
370 can be fit into 1363 3 times, resulting in a remainder of 253.
Record the quotient 3 as the next digit in the result. 
Result so far: 57593.0
Subtracting 1110 from 1363 leaves us with 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

Let's proceed to step 9:
2530 divided by 370 is 6 with a remainder of 310.
Record the quotient 6 as the next digit in the result. 
Result so far: 57593.6
Subtract 2220 from 2530 to get 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Going ahead to step 10:
The number 370 fits into 3100 8 times, leaving a remainder of 140.
Put 8 as the next digit of the answer. 
Result so far: 57593.68
Subtract 2960 from 3100 to get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

On to step 11:
370 can be fit into 1400 3 times, resulting in a remainder of 290.
The next digit of our result is 3. 
Result so far: 57593.683
If we subtract 1110 from 1400, we get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Step 12:
When dividing 2900 by 370, we get 7 with a remainder of 310.
The next digit of our result is 7. 
Result so far: 57593.6837
If we take 2590 away from 2900, we end up with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Moving on to step 13:
3100 divided by 370 is 8 with a remainder of 140.
Use 8 as the next digit of our solution. 
Result so far: 57593.68378
Subtract 2960 from 3100 to get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 14:
If we divide 1400 by 370, we get 3 and a remainder of 290.
The next digit of our result is 3. 
Result so far: 57593.683783
If we take 1110 away from 1400, we end up with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Moving on to step 15:
370 can be fit into 2900 7 times, resulting in a remainder of 310.
The next digit of our result is 7. 
Result so far: 57593.6837837
Deduct 2590 from 2900 and we're left with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Going ahead to step 16:
When dividing 3100 by 370, we get 8 with a remainder of 140.
The number 8 becomes the next digit in our result. 
Result so far: 57593.68378378
Subtracting 2960 from 3100 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

In conclusion, the division gives 57593.68378378 with a balance of 1.4e-07.