We're dividing 12646639 by 615 
We're looking to find how many times 615 goes into 12646639.

Moving on to step 1:
When dividing 1 by 615, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 615

Going ahead to step 2:
The number 615 fits into 12 0 times, leaving a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Take the next digit (6) from the dividend and append it to 12, then repeat: 126 / 615

Step 3:
When dividing 126 by 615, we get 0 with a remainder of 126.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 126 after subtracting 0 from 126.
Fetch the next digit (4) from the dividend, attach it to 126 and continue: 1264 / 615

Going ahead to step 4:
615 can be fit into 1264 2 times, resulting in a remainder of 34.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 1230 from 1264 and we're left with 34.
Append the next digit (6) from the dividend to 34 and continue with: 346 / 615

Advancing to step 5:
615 goes into 346 0 times with a remainder of 346.
Put 0 as the next digit of the answer. 
Result so far: 20.0
Subtracting 0 from 346 leaves us with 346.
Take the next digit (6) from the dividend and append it to 346, then repeat: 3466 / 615

Advancing to step 6:
If we divide 3466 by 615, we get 5 and a remainder of 391.
Write down 5 as next digit of the result. 
Result so far: 205.0
Deduct 3075 from 3466 and we're left with 391.
Include the next digit (3) from the dividend after 391, then repeat: 3913 / 615

Let's proceed to step 7:
615 can be fit into 3913 6 times, resulting in a remainder of 223.
Record the quotient 6 as the next digit in the result. 
Result so far: 2056.0
If we subtract 3690 from 3913, we get 223.
Append the next digit (9) from the dividend to 223 and continue with: 2239 / 615

On to step 8:
615 goes into 2239 3 times with a remainder of 394.
Record the quotient 3 as the next digit in the result. 
Result so far: 20563.0
The remainder is 394 after subtracting 1845 from 2239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

Advancing to step 9:
615 goes into 3940 6 times with a remainder of 250.
The next digit of our result is 6. 
Result so far: 20563.6
The remainder is 250 after subtracting 3690 from 3940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Going ahead to step 10:
When dividing 2500 by 615, we get 4 with a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 20563.64
The remainder is 40 after subtracting 2460 from 2500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 11:
615 goes into 400 0 times with a remainder of 400.
Put 0 as the next digit of the answer. 
Result so far: 20563.64
Subtract 0 from 400 to get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Step 12:
If we divide 4000 by 615, we get 6 and a remainder of 310.
Record the quotient 6 as the next digit in the result. 
Result so far: 20563.6406
Deduct 3690 from 4000 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.

On to step 13:
If we divide 3100 by 615, we get 5 and a remainder of 25.
The next digit of our result is 5. 
Result so far: 20563.64065
If we subtract 3075 from 3100, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 14:
250 divided by 615 is 0 with a remainder of 250.
Put 0 as the next digit of the answer. 
Result so far: 20563.64065
If we subtract 0 from 250, we get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

On to step 15:
The number 615 fits into 2500 4 times, leaving a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 20563.6406504
The remainder is 40 after subtracting 2460 from 2500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 16:
615 goes into 400 0 times with a remainder of 400.
Record the quotient 0 as the next digit in the result. 
Result so far: 20563.6406504
If we subtract 0 from 400, we get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

The final result is 20563.6406504 with a remainder of 4e-07.