We divide 691388 by 90
Our goal is to divide 691388 by 90.

Let's proceed to step 1:
When dividing 6 by 90, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (9) from the dividend after 6, then repeat: 69 / 90

Advancing to step 2:
If we divide 69 by 90, we get 0 and a remainder of 69.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 69, we end up with 69.
Fetch the next digit (1) from the dividend, attach it to 69 and continue: 691 / 90

Advancing to step 3:
691 divided by 90 is 7 with a remainder of 61.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Deduct 630 from 691 and we're left with 61.
Take the next digit (3) from the dividend and append it to 61, then repeat: 613 / 90

Going ahead to step 4:
The number 90 fits into 613 6 times, leaving a remainder of 73.
Use 6 as the next digit of our solution. 
Result so far: 76.0
If we subtract 540 from 613, we get 73.
Grab the next digit (8) from the dividend, add it to 73, then carry on: 738 / 90

Advancing to step 5:
738 divided by 90 is 8 with a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 768.0
The remainder is 18 after subtracting 720 from 738.
Fetch the next digit (8) from the dividend, attach it to 18 and continue: 188 / 90

On to step 6:
The number 90 fits into 188 2 times, leaving a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 7682.0
The remainder is 8 after subtracting 180 from 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 7:
90 can be fit into 80 0 times, resulting in a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 7682.0
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 8:
800 divided by 90 is 8 with a remainder of 80.
The next digit of our result is 8. 
Result so far: 7682.08
Subtract 720 from 800 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 9:
If we divide 800 by 90, we get 8 and a remainder of 80.
The next digit of our result is 8. 
Result so far: 7682.088
If we take 720 away from 800, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final outcome is 7682.088, with a leftover of 0.008.