We're dividing 743170 by 90 
We want to divide 743170 by 90.

Going ahead to step 1:
When dividing 7 by 90, we get 0 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.
Grab the next digit (4) from the dividend, add it to 7, then carry on: 74 / 90

Let's proceed to step 2:
If we divide 74 by 90, we get 0 and a remainder of 74.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 74 leaves us with 74.
Fetch the next digit (3) from the dividend, attach it to 74 and continue: 743 / 90

On to step 3:
90 can be fit into 743 8 times, resulting in a remainder of 23.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtracting 720 from 743 leaves us with 23.
Grab the next digit (1) from the dividend, add it to 23, then carry on: 231 / 90

Moving on to step 4:
The number 90 fits into 231 2 times, leaving a remainder of 51.
The number 2 becomes the next digit in our result. 
Result so far: 82.0
Subtract 180 from 231 to get 51.
Bring next digit (7) of the dividend behind the 51 and repeat the process: 517 / 90

Step 5:
When dividing 517 by 90, we get 5 with a remainder of 67.
The number 5 becomes the next digit in our result. 
Result so far: 825.0
Subtract 450 from 517 to get 67.
Take the next digit (0) from the dividend and append it to 67, then repeat: 670 / 90

Let's proceed to step 6:
90 goes into 670 7 times with a remainder of 40.
Record the quotient 7 as the next digit in the result. 
Result so far: 8257.0
If we subtract 630 from 670, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 7:
The number 90 fits into 400 4 times, leaving a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 8257.4
If we subtract 360 from 400, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 8:
400 divided by 90 is 4 with a remainder of 40.
Put 4 as the next digit of the answer. 
Result so far: 8257.44
If we take 360 away from 400, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final result is 8257.44 with a remainder of 0.04.