We divide 63689 by 90
Let's see how many times 90 fits into 63689.

Moving on to step 1:
6 divided by 90 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 90

Advancing to step 2:
When dividing 63 by 90, we get 0 with a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 63 to get 63.
Take the next digit (6) from the dividend and append it to 63, then repeat: 636 / 90

Going ahead to step 3:
90 goes into 636 7 times with a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 7.0
If we take 630 away from 636, we end up with 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 90

On to step 4:
90 goes into 68 0 times with a remainder of 68.
Put 0 as the next digit of the answer. 
Result so far: 70.0
Deduct 0 from 68 and we're left with 68.
Fetch the next digit (9) from the dividend, attach it to 68 and continue: 689 / 90

Let's proceed to step 5:
When dividing 689 by 90, we get 7 with a remainder of 59.
Write down 7 as next digit of the result. 
Result so far: 707.0
Deduct 630 from 689 and we're left with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Moving on to step 6:
The number 90 fits into 590 6 times, leaving a remainder of 50.
The number 6 becomes the next digit in our result. 
Result so far: 707.6
If we take 540 away from 590, 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.

Let's proceed to step 7:
90 goes into 500 5 times with a remainder of 50.
The number 5 becomes the next digit in our result. 
Result so far: 707.65
If we take 450 away from 500, 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 8:
90 goes into 500 5 times with a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 707.655
Deduct 450 from 500 and we're left 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.

The final outcome is 707.655, with a leftover of 0.005.