86661064 divided by 583 
We want to figure out the number of times 86661064 can be divided by 583.

Going ahead to step 1:
The number 583 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 583

Going ahead to step 2:
86 divided by 583 is 0 with a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Append the next digit (6) from the dividend to 86 and continue with: 866 / 583

Going ahead to step 3:
When dividing 866 by 583, we get 1 with a remainder of 283.
The next digit of our result is 1. 
Result so far: 1.0
If we take 583 away from 866, we end up with 283.
Take the next digit (6) from the dividend and append it to 283, then repeat: 2836 / 583

On to step 4:
The number 583 fits into 2836 4 times, leaving a remainder of 504.
Write down 4 as next digit of the result. 
Result so far: 14.0
If we take 2332 away from 2836, we end up with 504.
Fetch the next digit (1) from the dividend, attach it to 504 and continue: 5041 / 583

Let's proceed to step 5:
The number 583 fits into 5041 8 times, leaving a remainder of 377.
The next digit of our result is 8. 
Result so far: 148.0
Subtracting 4664 from 5041 leaves us with 377.
Append the next digit (0) from the dividend to 377 and continue with: 3770 / 583

On to step 6:
The number 583 fits into 3770 6 times, leaving a remainder of 272.
Use 6 as the next digit of our solution. 
Result so far: 1486.0
The remainder is 272 after subtracting 3498 from 3770.
Grab the next digit (6) from the dividend, add it to 272, then carry on: 2726 / 583

Moving on to step 7:
The number 583 fits into 2726 4 times, leaving a remainder of 394.
Put 4 as the next digit of the answer. 
Result so far: 14864.0
Deduct 2332 from 2726 and we're left with 394.
Append the next digit (4) from the dividend to 394 and continue with: 3944 / 583

Step 8:
When dividing 3944 by 583, we get 6 with a remainder of 446.
The number 6 becomes the next digit in our result. 
Result so far: 148646.0
The remainder is 446 after subtracting 3498 from 3944.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

Step 9:
If we divide 4460 by 583, we get 7 and a remainder of 379.
The number 7 becomes the next digit in our result. 
Result so far: 148646.7
If we subtract 4081 from 4460, we get 379.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3790, and continue the process.

Moving on to step 10:
583 can be fit into 3790 6 times, resulting in a remainder of 292.
Write down 6 as next digit of the result. 
Result so far: 148646.76
If we take 3498 away from 3790, we end up with 292.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

On to step 11:
2920 divided by 583 is 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 148646.765
If we take 2915 away from 2920, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 12:
If we divide 50 by 583, we get 0 and a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 148646.765
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 13:
The number 583 fits into 500 0 times, leaving a remainder of 500.
Write down 0 as next digit of the result. 
Result so far: 148646.765
Deduct 0 from 500 and we're left with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

The final result is 148646.765 with a remainder of 0.0005.