We divide 357992 by 90
We want to figure out the number of times 357992 can be divided by 90.

Going ahead to step 1:
90 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 90

Step 2:
The number 90 fits into 35 0 times, leaving a remainder of 35.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 35 after subtracting 0 from 35.
Take the next digit (7) from the dividend and append it to 35, then repeat: 357 / 90

Advancing to step 3:
90 goes into 357 3 times with a remainder of 87.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 87 after subtracting 270 from 357.
Grab the next digit (9) from the dividend, add it to 87, then carry on: 879 / 90

On to step 4:
879 divided by 90 is 9 with a remainder of 69.
The next digit of our result is 9. 
Result so far: 39.0
If we subtract 810 from 879, we get 69.
Bring next digit (9) of the dividend behind the 69 and repeat the process: 699 / 90

Step 5:
90 goes into 699 7 times with a remainder of 69.
Record the quotient 7 as the next digit in the result. 
Result so far: 397.0
If we subtract 630 from 699, we get 69.
Append the next digit (2) from the dividend to 69 and continue with: 692 / 90

Advancing to step 6:
The number 90 fits into 692 7 times, leaving a remainder of 62.
Put 7 as the next digit of the answer. 
Result so far: 3977.0
If we take 630 away from 692, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 7:
90 can be fit into 620 6 times, resulting in a remainder of 80.
The next digit of our result is 6. 
Result so far: 3977.6
Deduct 540 from 620 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 8:
The number 90 fits into 800 8 times, leaving a remainder of 80.
Put 8 as the next digit of the answer. 
Result so far: 3977.68
Subtract 720 from 800 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 9:
When dividing 800 by 90, we get 8 with a remainder of 80.
The number 8 becomes the next digit in our result. 
Result so far: 3977.688
If we take 720 away from 800, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Our division results in 3977.688 with a remaining 0.008.