Let's divide 346869 by 90
Let's see how many times 90 fits into 346869.

Step 1:
90 can be fit into 3 0 times, resulting in a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (4) from the dividend and append it to 3, then repeat: 34 / 90

On 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
If we take 0 away from 34, we end up with 34.
Take the next digit (6) from the dividend and append it to 34, then repeat: 346 / 90

Going ahead to step 3:
90 goes into 346 3 times with a remainder of 76.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 76 after subtracting 270 from 346.
Append the next digit (8) from the dividend to 76 and continue with: 768 / 90

Going ahead to step 4:
90 can be fit into 768 8 times, resulting in a remainder of 48.
Put 8 as the next digit of the answer. 
Result so far: 38.0
If we take 720 away from 768, we end up with 48.
Bring next digit (6) of the dividend behind the 48 and repeat the process: 486 / 90

Advancing to step 5:
486 divided by 90 is 5 with a remainder of 36.
Record the quotient 5 as the next digit in the result. 
Result so far: 385.0
Subtract 450 from 486 to get 36.
Include the next digit (9) from the dividend after 36, then repeat: 369 / 90

Advancing to step 6:
90 can be fit into 369 4 times, resulting in a remainder of 9.
Put 4 as the next digit of the answer. 
Result so far: 3854.0
Subtract 360 from 369 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
90 can be fit into 90 1 times, resulting in a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 3854.1
Subtracting 90 from 90 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
90 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 3854.1
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
90 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 3854.1
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 3854.1 with a remainder of 0.0.