We look at the division of 721553 by 86 
We're looking to find how many times 86 goes into 721553.

Advancing to step 1:
7 divided by 86 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 86

On to step 2:
The number 86 fits into 72 0 times, leaving a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Include the next digit (1) from the dividend after 72, then repeat: 721 / 86

Let's proceed to step 3:
86 goes into 721 8 times with a remainder of 33.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtracting 688 from 721 leaves us with 33.
Grab the next digit (5) from the dividend, add it to 33, then carry on: 335 / 86

Let's proceed to step 4:
The number 86 fits into 335 3 times, leaving a remainder of 77.
Write down 3 as next digit of the result. 
Result so far: 83.0
If we take 258 away from 335, we end up with 77.
Fetch the next digit (5) from the dividend, attach it to 77 and continue: 775 / 86

On to step 5:
86 can be fit into 775 9 times, resulting in a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 839.0
If we take 774 away from 775, we end up with 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 86

Let's proceed to step 6:
86 goes into 13 0 times with a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 8390.0
Subtracting 0 from 13 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 7:
86 can be fit into 130 1 times, resulting in a remainder of 44.
Record the quotient 1 as the next digit in the result. 
Result so far: 8390.1
If we subtract 86 from 130, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 8:
When dividing 440 by 86, we get 5 with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 8390.15
Subtracting 430 from 440 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
The number 86 fits into 100 1 times, leaving a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 8390.151
The remainder is 14 after subtracting 86 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 10:
When dividing 140 by 86, we get 1 with a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 8390.1511
If we take 86 away from 140, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

In conclusion, the division gives 8390.1511 with a balance of 0.00054.