Let's divide 351437 by 90
We're looking to find how many times 90 goes into 351437.

Advancing to step 1:
90 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 90

On to step 2:
90 goes into 35 0 times with a remainder of 35.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 35, we end up with 35.
Append the next digit (1) from the dividend to 35 and continue with: 351 / 90

Let's proceed to step 3:
If we divide 351 by 90, we get 3 and a remainder of 81.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 270 from 351, we get 81.
Bring next digit (4) of the dividend behind the 81 and repeat the process: 814 / 90

Going ahead to step 4:
When dividing 814 by 90, we get 9 with a remainder of 4.
Put 9 as the next digit of the answer. 
Result so far: 39.0
Deduct 810 from 814 and we're left with 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 90

Let's proceed to step 5:
When dividing 43 by 90, we get 0 with a remainder of 43.
Use 0 as the next digit of our solution. 
Result so far: 390.0
The remainder is 43 after subtracting 0 from 43.
Grab the next digit (7) from the dividend, add it to 43, then carry on: 437 / 90

On to step 6:
The number 90 fits into 437 4 times, leaving a remainder of 77.
The next digit of our result is 4. 
Result so far: 3904.0
Subtracting 360 from 437 leaves us with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Let's proceed to step 7:
90 can be fit into 770 8 times, resulting in a remainder of 50.
Use 8 as the next digit of our solution. 
Result so far: 3904.8
The remainder is 50 after subtracting 720 from 770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 8:
If we divide 500 by 90, we get 5 and a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 3904.85
Subtracting 450 from 500 leaves us with 50.
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 9:
If we divide 500 by 90, we get 5 and a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 3904.855
Deduct 450 from 500 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Our division results in 3904.855 with a remaining 0.005.