We're dividing 508910 by 91 
We want to figure out the number of times 508910 can be divided by 91.

Going ahead to step 1:
If we divide 5 by 91, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 91

Advancing to step 2:
The number 91 fits into 50 0 times, leaving a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 50 after subtracting 0 from 50.
Append the next digit (8) from the dividend to 50 and continue with: 508 / 91

Advancing to step 3:
If we divide 508 by 91, we get 5 and a remainder of 53.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Deduct 455 from 508 and we're left with 53.
Grab the next digit (9) from the dividend, add it to 53, then carry on: 539 / 91

Advancing to step 4:
If we divide 539 by 91, we get 5 and a remainder of 84.
Record the quotient 5 as the next digit in the result. 
Result so far: 55.0
If we subtract 455 from 539, we get 84.
Fetch the next digit (1) from the dividend, attach it to 84 and continue: 841 / 91

On to step 5:
If we divide 841 by 91, we get 9 and a remainder of 22.
The next digit of our result is 9. 
Result so far: 559.0
If we take 819 away from 841, we end up with 22.
Take the next digit (0) from the dividend and append it to 22, then repeat: 220 / 91

Step 6:
When dividing 220 by 91, we get 2 with a remainder of 38.
The next digit of our result is 2. 
Result so far: 5592.0
If we take 182 away from 220, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 7:
The number 91 fits into 380 4 times, leaving a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 5592.4
Deduct 364 from 380 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 8:
160 divided by 91 is 1 with a remainder of 69.
Record the quotient 1 as the next digit in the result. 
Result so far: 5592.41
Subtracting 91 from 160 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 9:
When dividing 690 by 91, we get 7 with a remainder of 53.
Put 7 as the next digit of the answer. 
Result so far: 5592.417
Subtracting 637 from 690 leaves us with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 10:
91 can be fit into 530 5 times, resulting in a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 5592.4175
If we take 455 away from 530, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 11:
When dividing 750 by 91, we get 8 with a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 5592.41758
If we subtract 728 from 750, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 12:
220 divided by 91 is 2 with a remainder of 38.
The number 2 becomes the next digit in our result. 
Result so far: 5592.417582
Subtract 182 from 220 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 13:
380 divided by 91 is 4 with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 5592.4175824
If we take 364 away from 380, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 14:
When dividing 160 by 91, we get 1 with a remainder of 69.
The next digit of our result is 1. 
Result so far: 5592.41758241
Subtracting 91 from 160 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

After the division, we end up with 5592.41758241 and a remainder of 6.9e-08.