We're dividing 3400 by 90 
We're looking to find how many times 90 goes into 3400.

Advancing to step 1:
90 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (4) of the dividend behind the 3 and repeat the process: 34 / 90

On 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
The remainder is 34 after subtracting 0 from 34.
Include the next digit (0) from the dividend after 34, then repeat: 340 / 90

Step 3:
If we divide 340 by 90, we get 3 and a remainder of 70.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 270 from 340, we get 70.
Fetch the next digit (0) from the dividend, attach it to 70 and continue: 700 / 90

Moving on to step 4:
The number 90 fits into 700 7 times, leaving a remainder of 70.
The next digit of our result is 7. 
Result so far: 37.0
If we take 630 away from 700, 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.

On to step 5:
90 goes into 700 7 times with a remainder of 70.
The number 7 becomes the next digit in our result. 
Result so far: 37.7
Subtract 630 from 700 to 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.

Moving on to step 6:
The number 90 fits into 700 7 times, leaving a remainder of 70.
The number 7 becomes the next digit in our result. 
Result so far: 37.77
If we take 630 away from 700, 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.

After the division, we end up with 37.77 and a remainder of 0.07.