We're dividing 347902 by 90 
We want to divide 347902 by 90.

Advancing to step 1:
If we divide 3 by 90, we get 0 and a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 90

Advancing to step 2:
90 can be fit into 34 0 times, resulting in a remainder of 34.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 34 and we're left with 34.
Append the next digit (7) from the dividend to 34 and continue with: 347 / 90

Step 3:
347 divided by 90 is 3 with a remainder of 77.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 270 from 347 leaves us with 77.
Bring next digit (9) of the dividend behind the 77 and repeat the process: 779 / 90

Advancing to step 4:
90 goes into 779 8 times with a remainder of 59.
Write down 8 as next digit of the result. 
Result so far: 38.0
Deduct 720 from 779 and we're left with 59.
Grab the next digit (0) from the dividend, add it to 59, then carry on: 590 / 90

Going ahead to step 5:
90 goes into 590 6 times with a remainder of 50.
The next digit of our result is 6. 
Result so far: 386.0
If we take 540 away from 590, we end up with 50.
Bring next digit (2) of the dividend behind the 50 and repeat the process: 502 / 90

Step 6:
90 goes into 502 5 times with a remainder of 52.
Record the quotient 5 as the next digit in the result. 
Result so far: 3865.0
Deduct 450 from 502 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 7:
520 divided by 90 is 5 with a remainder of 70.
The next digit of our result is 5. 
Result so far: 3865.5
If we subtract 450 from 520, we 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.

Let's proceed to step 8:
If we divide 700 by 90, we get 7 and a remainder of 70.
The next digit of our result is 7. 
Result so far: 3865.57
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.

Advancing to step 9:
90 goes into 700 7 times with a remainder of 70.
Write down 7 as next digit of the result. 
Result so far: 3865.577
If we take 630 away from 700, we end up 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.

Our division results in 3865.577 with a remaining 0.007.