21396456 divided by 915 
Our goal is to divide 21396456 by 915.

On to step 1:
915 goes into 2 0 times with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 915

Advancing to step 2:
If we divide 21 by 915, we get 0 and a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Append the next digit (3) from the dividend to 21 and continue with: 213 / 915

Advancing to step 3:
When dividing 213 by 915, we get 0 with a remainder of 213.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 213 and we're left with 213.
Bring next digit (9) of the dividend behind the 213 and repeat the process: 2139 / 915

On to step 4:
When dividing 2139 by 915, we get 2 with a remainder of 309.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 1830 from 2139 to get 309.
Bring next digit (6) of the dividend behind the 309 and repeat the process: 3096 / 915

Step 5:
If we divide 3096 by 915, we get 3 and a remainder of 351.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
Subtract 2745 from 3096 to get 351.
Include the next digit (4) from the dividend after 351, then repeat: 3514 / 915

On to step 6:
915 can be fit into 3514 3 times, resulting in a remainder of 769.
Write down 3 as next digit of the result. 
Result so far: 233.0
Subtract 2745 from 3514 to get 769.
Fetch the next digit (5) from the dividend, attach it to 769 and continue: 7695 / 915

Advancing to step 7:
7695 divided by 915 is 8 with a remainder of 375.
Use 8 as the next digit of our solution. 
Result so far: 2338.0
Subtracting 7320 from 7695 leaves us with 375.
Grab the next digit (6) from the dividend, add it to 375, then carry on: 3756 / 915

Moving on to step 8:
915 goes into 3756 4 times with a remainder of 96.
Write down 4 as next digit of the result. 
Result so far: 23384.0
Subtracting 3660 from 3756 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Advancing to step 9:
If we divide 960 by 915, we get 1 and a remainder of 45.
Record the quotient 1 as the next digit in the result. 
Result so far: 23384.1
Subtract 915 from 960 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 10:
When dividing 450 by 915, we get 0 with a remainder of 450.
Record the quotient 0 as the next digit in the result. 
Result so far: 23384.1
The remainder is 450 after subtracting 0 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Step 11:
The number 915 fits into 4500 4 times, leaving a remainder of 840.
Record the quotient 4 as the next digit in the result. 
Result so far: 23384.104
Deduct 3660 from 4500 and we're left with 840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8400, and continue the process.

Step 12:
915 can be fit into 8400 9 times, resulting in a remainder of 165.
Record the quotient 9 as the next digit in the result. 
Result so far: 23384.1049
If we take 8235 away from 8400, we end up with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Step 13:
If we divide 1650 by 915, we get 1 and a remainder of 735.
The next digit of our result is 1. 
Result so far: 23384.10491
Subtracting 915 from 1650 leaves us with 735.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7350, and continue the process.

Let's proceed to step 14:
The number 915 fits into 7350 8 times, leaving a remainder of 30.
Write down 8 as next digit of the result. 
Result so far: 23384.104918
Deduct 7320 from 7350 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 15:
If we divide 300 by 915, we get 0 and a remainder of 300.
The next digit of our result is 0. 
Result so far: 23384.104918
If we take 0 away from 300, we end up with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Going ahead to step 16:
When dividing 3000 by 915, we get 3 with a remainder of 255.
Write down 3 as next digit of the result. 
Result so far: 23384.10491803
Deduct 2745 from 3000 and we're left with 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

After the division, we end up with 23384.10491803 and a remainder of 2.55e-07.