Let's divide 87422 by 90
We want to figure out the number of times 87422 can be divided by 90.

Going ahead to step 1:
90 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 90

Step 2:
90 goes into 87 0 times with a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 87 and we're left with 87.
Append the next digit (4) from the dividend to 87 and continue with: 874 / 90

Advancing to step 3:
When dividing 874 by 90, we get 9 with a remainder of 64.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtract 810 from 874 to get 64.
Take the next digit (2) from the dividend and append it to 64, then repeat: 642 / 90

Let's proceed to step 4:
The number 90 fits into 642 7 times, leaving a remainder of 12.
The next digit of our result is 7. 
Result so far: 97.0
Subtract 630 from 642 to get 12.
Fetch the next digit (2) from the dividend, attach it to 12 and continue: 122 / 90

Moving on to step 5:
When dividing 122 by 90, we get 1 with a remainder of 32.
Use 1 as the next digit of our solution. 
Result so far: 971.0
Deduct 90 from 122 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 6:
90 can be fit into 320 3 times, resulting in a remainder of 50.
Put 3 as the next digit of the answer. 
Result so far: 971.3
Subtract 270 from 320 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 7:
500 divided by 90 is 5 with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 971.35
The remainder is 50 after subtracting 450 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 8:
90 can be fit into 500 5 times, resulting in a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 971.355
The remainder is 50 after subtracting 450 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

After the division, we end up with 971.355 and a remainder of 0.005.