57405 ÷ 90 
We're looking to find how many times 90 goes into 57405.

Advancing to step 1:
If we divide 5 by 90, we get 0 and a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 90

Advancing to step 2:
90 can be fit into 57 0 times, resulting in a remainder of 57.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 57 to get 57.
Bring next digit (4) of the dividend behind the 57 and repeat the process: 574 / 90

Moving on to step 3:
If we divide 574 by 90, we get 6 and a remainder of 34.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Deduct 540 from 574 and we're left with 34.
Take the next digit (0) from the dividend and append it to 34, then repeat: 340 / 90

Advancing to step 4:
90 can be fit into 340 3 times, resulting in a remainder of 70.
Write down 3 as next digit of the result. 
Result so far: 63.0
If we subtract 270 from 340, we get 70.
Bring next digit (5) of the dividend behind the 70 and repeat the process: 705 / 90

Let's proceed to step 5:
90 can be fit into 705 7 times, resulting in a remainder of 75.
Put 7 as the next digit of the answer. 
Result so far: 637.0
If we take 630 away from 705, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 6:
If we divide 750 by 90, we get 8 and a remainder of 30.
Record the quotient 8 as the next digit in the result. 
Result so far: 637.8
Subtract 720 from 750 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 7:
90 goes into 300 3 times with a remainder of 30.
Put 3 as the next digit of the answer. 
Result so far: 637.83
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 8:
When dividing 300 by 90, we get 3 with a remainder of 30.
The next digit of our result is 3. 
Result so far: 637.833
If we subtract 270 from 300, we 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.

The final outcome is 637.833, with a leftover of 0.003.