We look at the division of 345724 by 90 
Our goal is to divide 345724 by 90.

Let's proceed to step 1:
The number 90 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 90

Advancing to step 2:
34 divided by 90 is 0 with a remainder of 34.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 34 leaves us with 34.
Include the next digit (5) from the dividend after 34, then repeat: 345 / 90

Moving on to step 3:
If we divide 345 by 90, we get 3 and a remainder of 75.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 270 from 345, we get 75.
Bring next digit (7) of the dividend behind the 75 and repeat the process: 757 / 90

Moving on to step 4:
90 goes into 757 8 times with a remainder of 37.
The number 8 becomes the next digit in our result. 
Result so far: 38.0
Deduct 720 from 757 and we're left with 37.
Bring next digit (2) of the dividend behind the 37 and repeat the process: 372 / 90

Let's proceed to step 5:
If we divide 372 by 90, we get 4 and a remainder of 12.
The next digit of our result is 4. 
Result so far: 384.0
If we subtract 360 from 372, we get 12.
Fetch the next digit (4) from the dividend, attach it to 12 and continue: 124 / 90

On to step 6:
124 divided by 90 is 1 with a remainder of 34.
The next digit of our result is 1. 
Result so far: 3841.0
Deduct 90 from 124 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 7:
If we divide 340 by 90, we get 3 and a remainder of 70.
Record the quotient 3 as the next digit in the result. 
Result so far: 3841.3
If we take 270 away from 340, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 8:
90 goes into 700 7 times with a remainder of 70.
Put 7 as the next digit of the answer. 
Result so far: 3841.37
If we subtract 630 from 700, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 9:
90 goes into 700 7 times with a remainder of 70.
Put 7 as the next digit of the answer. 
Result so far: 3841.377
If we subtract 630 from 700, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The final outcome is 3841.377, with a leftover of 0.007.