We're dividing 339707 by 90 
We want to figure out the number of times 339707 can be divided by 90.

Let's proceed to step 1:
The number 90 fits into 3 0 times, leaving a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 90

Going ahead to step 2:
When dividing 33 by 90, we get 0 with a remainder of 33.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 33, we end up with 33.
Append the next digit (9) from the dividend to 33 and continue with: 339 / 90

Let's proceed to step 3:
90 can be fit into 339 3 times, resulting in a remainder of 69.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 270 from 339 and we're left with 69.
Fetch the next digit (7) from the dividend, attach it to 69 and continue: 697 / 90

Step 4:
90 goes into 697 7 times with a remainder of 67.
Record the quotient 7 as the next digit in the result. 
Result so far: 37.0
Deduct 630 from 697 and we're left with 67.
Take the next digit (0) from the dividend and append it to 67, then repeat: 670 / 90

Let's proceed to step 5:
90 can be fit into 670 7 times, resulting in a remainder of 40.
The number 7 becomes the next digit in our result. 
Result so far: 377.0
Subtract 630 from 670 to get 40.
Include the next digit (7) from the dividend after 40, then repeat: 407 / 90

Advancing to step 6:
90 can be fit into 407 4 times, resulting in a remainder of 47.
Record the quotient 4 as the next digit in the result. 
Result so far: 3774.0
The remainder is 47 after subtracting 360 from 407.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 7:
When dividing 470 by 90, we get 5 with a remainder of 20.
Write down 5 as next digit of the result. 
Result so far: 3774.5
Deduct 450 from 470 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
90 goes into 200 2 times with a remainder of 20.
Use 2 as the next digit of our solution. 
Result so far: 3774.52
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 9:
200 divided by 90 is 2 with a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 3774.522
Subtracting 180 from 200 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 3774.522 with a remaining 0.002.