Let's divide 748420 by 90
We want to divide 748420 by 90.

On to step 1:
90 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 90

Let's proceed to step 2:
90 goes into 74 0 times with a remainder of 74.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 74 and we're left with 74.
Grab the next digit (8) from the dividend, add it to 74, then carry on: 748 / 90

Moving on to step 3:
90 goes into 748 8 times with a remainder of 28.
Write down 8 as next digit of the result. 
Result so far: 8.0
Deduct 720 from 748 and we're left with 28.
Bring next digit (4) of the dividend behind the 28 and repeat the process: 284 / 90

Step 4:
90 goes into 284 3 times with a remainder of 14.
The next digit of our result is 3. 
Result so far: 83.0
If we subtract 270 from 284, we get 14.
Bring next digit (2) of the dividend behind the 14 and repeat the process: 142 / 90

Advancing to step 5:
The number 90 fits into 142 1 times, leaving a remainder of 52.
Put 1 as the next digit of the answer. 
Result so far: 831.0
If we subtract 90 from 142, we get 52.
Grab the next digit (0) from the dividend, add it to 52, then carry on: 520 / 90

Moving on to step 6:
90 can be fit into 520 5 times, resulting in a remainder of 70.
Record the quotient 5 as the next digit in the result. 
Result so far: 8315.0
Subtract 450 from 520 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 7:
700 divided by 90 is 7 with a remainder of 70.
Put 7 as the next digit of the answer. 
Result so far: 8315.7
Subtracting 630 from 700 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 8:
If we divide 700 by 90, we get 7 and a remainder of 70.
Put 7 as the next digit of the answer. 
Result so far: 8315.77
Subtract 630 from 700 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The final result is 8315.77 with a remainder of 0.07.