We're dividing 12356671 by 721 
We're looking to find how many times 721 goes into 12356671.

Moving on to step 1:
If we divide 1 by 721, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 721

On to step 2:
When dividing 12 by 721, we get 0 with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Fetch the next digit (3) from the dividend, attach it to 12 and continue: 123 / 721

Going ahead to step 3:
When dividing 123 by 721, we get 0 with a remainder of 123.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 123 leaves us with 123.
Include the next digit (5) from the dividend after 123, then repeat: 1235 / 721

Going ahead to step 4:
If we divide 1235 by 721, we get 1 and a remainder of 514.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 721 away from 1235, we end up with 514.
Include the next digit (6) from the dividend after 514, then repeat: 5146 / 721

On to step 5:
If we divide 5146 by 721, we get 7 and a remainder of 99.
Use 7 as the next digit of our solution. 
Result so far: 17.0
Subtract 5047 from 5146 to get 99.
Include the next digit (6) from the dividend after 99, then repeat: 996 / 721

Let's proceed to step 6:
996 divided by 721 is 1 with a remainder of 275.
Record the quotient 1 as the next digit in the result. 
Result so far: 171.0
Subtracting 721 from 996 leaves us with 275.
Take the next digit (7) from the dividend and append it to 275, then repeat: 2757 / 721

On to step 7:
2757 divided by 721 is 3 with a remainder of 594.
Put 3 as the next digit of the answer. 
Result so far: 1713.0
Subtract 2163 from 2757 to get 594.
Append the next digit (1) from the dividend to 594 and continue with: 5941 / 721

Advancing to step 8:
If we divide 5941 by 721, we get 8 and a remainder of 173.
Put 8 as the next digit of the answer. 
Result so far: 17138.0
Subtracting 5768 from 5941 leaves us with 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

Advancing to step 9:
If we divide 1730 by 721, we get 2 and a remainder of 288.
Use 2 as the next digit of our solution. 
Result so far: 17138.2
Deduct 1442 from 1730 and we're left with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Step 10:
If we divide 2880 by 721, we get 3 and a remainder of 717.
Record the quotient 3 as the next digit in the result. 
Result so far: 17138.23
If we subtract 2163 from 2880, we get 717.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7170, and continue the process.

Step 11:
If we divide 7170 by 721, we get 9 and a remainder of 681.
The number 9 becomes the next digit in our result. 
Result so far: 17138.239
The remainder is 681 after subtracting 6489 from 7170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6810, and continue the process.

On to step 12:
721 goes into 6810 9 times with a remainder of 321.
The next digit of our result is 9. 
Result so far: 17138.2399
If we take 6489 away from 6810, we end up with 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

Our division results in 17138.2399 with a remaining 0.00321.