308089 ÷ 90 
We're looking to find how many times 90 goes into 308089.

Going ahead to step 1:
90 can be fit into 3 0 times, resulting in a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 90

Step 2:
If we divide 30 by 90, we get 0 and a remainder of 30.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 30, we get 30.
Bring next digit (8) of the dividend behind the 30 and repeat the process: 308 / 90

On to step 3:
If we divide 308 by 90, we get 3 and a remainder of 38.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 270 away from 308, we end up with 38.
Append the next digit (0) from the dividend to 38 and continue with: 380 / 90

Step 4:
When dividing 380 by 90, we get 4 with a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 34.0
If we take 360 away from 380, we end up with 20.
Include the next digit (8) from the dividend after 20, then repeat: 208 / 90

Let's proceed to step 5:
208 divided by 90 is 2 with a remainder of 28.
Record the quotient 2 as the next digit in the result. 
Result so far: 342.0
Deduct 180 from 208 and we're left with 28.
Include the next digit (9) from the dividend after 28, then repeat: 289 / 90

On to step 6:
If we divide 289 by 90, we get 3 and a remainder of 19.
Use 3 as the next digit of our solution. 
Result so far: 3423.0
Deduct 270 from 289 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 7:
190 divided by 90 is 2 with a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 3423.2
If we subtract 180 from 190, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
90 goes into 100 1 times with a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 3423.21
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 9:
The number 90 fits into 100 1 times, leaving a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 3423.211
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 3423.211, with a leftover of 0.001.