385401 ÷ 90 
We're looking to find how many times 90 goes into 385401.

On to step 1:
When dividing 3 by 90, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 90

On to step 2:
When dividing 38 by 90, we get 0 with a remainder of 38.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 38 and we're left with 38.
Take the next digit (5) from the dividend and append it to 38, then repeat: 385 / 90

Going ahead to step 3:
90 goes into 385 4 times with a remainder of 25.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 360 from 385, we get 25.
Include the next digit (4) from the dividend after 25, then repeat: 254 / 90

Going ahead to step 4:
When dividing 254 by 90, we get 2 with a remainder of 74.
The next digit of our result is 2. 
Result so far: 42.0
The remainder is 74 after subtracting 180 from 254.
Bring next digit (0) of the dividend behind the 74 and repeat the process: 740 / 90

Advancing to step 5:
The number 90 fits into 740 8 times, leaving a remainder of 20.
The number 8 becomes the next digit in our result. 
Result so far: 428.0
Subtract 720 from 740 to get 20.
Take the next digit (1) from the dividend and append it to 20, then repeat: 201 / 90

On to step 6:
90 can be fit into 201 2 times, resulting in a remainder of 21.
Put 2 as the next digit of the answer. 
Result so far: 4282.0
The remainder is 21 after subtracting 180 from 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 7:
90 can be fit into 210 2 times, resulting in a remainder of 30.
Record the quotient 2 as the next digit in the result. 
Result so far: 4282.2
Subtract 180 from 210 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 8:
90 goes into 300 3 times with a remainder of 30.
The next digit of our result is 3. 
Result so far: 4282.23
Subtract 270 from 300 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 9:
90 goes into 300 3 times with a remainder of 30.
Put 3 as the next digit of the answer. 
Result so far: 4282.233
The remainder is 30 after subtracting 270 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

In conclusion, the division gives 4282.233 with a balance of 0.003.