We're dividing 58515603 by 86 
Let's see how many times 86 fits into 58515603.

On to step 1:
86 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (8) from the dividend after 5, then repeat: 58 / 86

Let's proceed to step 2:
The number 86 fits into 58 0 times, leaving a remainder of 58.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 58 to get 58.
Take the next digit (5) from the dividend and append it to 58, then repeat: 585 / 86

Step 3:
86 can be fit into 585 6 times, resulting in a remainder of 69.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Deduct 516 from 585 and we're left with 69.
Grab the next digit (1) from the dividend, add it to 69, then carry on: 691 / 86

Going ahead to step 4:
If we divide 691 by 86, we get 8 and a remainder of 3.
Use 8 as the next digit of our solution. 
Result so far: 68.0
If we subtract 688 from 691, we get 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 86

Moving on to step 5:
86 goes into 35 0 times with a remainder of 35.
Record the quotient 0 as the next digit in the result. 
Result so far: 680.0
The remainder is 35 after subtracting 0 from 35.
Append the next digit (6) from the dividend to 35 and continue with: 356 / 86

Let's proceed to step 6:
86 can be fit into 356 4 times, resulting in a remainder of 12.
The next digit of our result is 4. 
Result so far: 6804.0
If we take 344 away from 356, we end up with 12.
Append the next digit (0) from the dividend to 12 and continue with: 120 / 86

Step 7:
86 goes into 120 1 times with a remainder of 34.
The number 1 becomes the next digit in our result. 
Result so far: 68041.0
The remainder is 34 after subtracting 86 from 120.
Take the next digit (3) from the dividend and append it to 34, then repeat: 343 / 86

Going ahead to step 8:
86 can be fit into 343 3 times, resulting in a remainder of 85.
Use 3 as the next digit of our solution. 
Result so far: 680413.0
Subtracting 258 from 343 leaves us with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Going ahead to step 9:
When dividing 850 by 86, we get 9 with a remainder of 76.
The number 9 becomes the next digit in our result. 
Result so far: 680413.9
If we subtract 774 from 850, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 10:
86 goes into 760 8 times with a remainder of 72.
Write down 8 as next digit of the result. 
Result so far: 680413.98
If we take 688 away from 760, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 11:
720 divided by 86 is 8 with a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 680413.988
If we subtract 688 from 720, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final result is 680413.988 with a remainder of 0.0032.