309001 divided by 85 
We want to figure out the number of times 309001 can be divided by 85.

Step 1:
3 divided by 85 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 85

Going ahead to step 2:
85 goes into 30 0 times with a remainder of 30.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 30 and we're left with 30.
Bring next digit (9) of the dividend behind the 30 and repeat the process: 309 / 85

Moving on to step 3:
85 can be fit into 309 3 times, resulting in a remainder of 54.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 255 from 309 leaves us with 54.
Append the next digit (0) from the dividend to 54 and continue with: 540 / 85

On to step 4:
540 divided by 85 is 6 with a remainder of 30.
Use 6 as the next digit of our solution. 
Result so far: 36.0
If we subtract 510 from 540, we get 30.
Bring next digit (0) of the dividend behind the 30 and repeat the process: 300 / 85

On to step 5:
300 divided by 85 is 3 with a remainder of 45.
Record the quotient 3 as the next digit in the result. 
Result so far: 363.0
Deduct 255 from 300 and we're left with 45.
Fetch the next digit (1) from the dividend, attach it to 45 and continue: 451 / 85

Going ahead to step 6:
85 goes into 451 5 times with a remainder of 26.
Use 5 as the next digit of our solution. 
Result so far: 3635.0
Subtracting 425 from 451 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 7:
85 can be fit into 260 3 times, resulting in a remainder of 5.
The next digit of our result is 3. 
Result so far: 3635.3
If we subtract 255 from 260, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 8:
85 can be fit into 50 0 times, resulting in a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 3635.3
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 9:
The number 85 fits into 500 5 times, leaving a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 3635.305
Subtract 425 from 500 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 10:
750 divided by 85 is 8 with a remainder of 70.
Write down 8 as next digit of the result. 
Result so far: 3635.3058
If we subtract 680 from 750, 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 11:
85 can be fit into 700 8 times, resulting in a remainder of 20.
The number 8 becomes the next digit in our result. 
Result so far: 3635.30588
If we subtract 680 from 700, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 3635.30588 and a remainder of 2e-05.