We look at the division of 309008 by 73 
Let's see how many times 73 fits into 309008.

On to step 1:
The number 73 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
The remainder is 3 after subtracting 0 from 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 73

Going ahead to step 2:
If we divide 30 by 73, we get 0 and a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Grab the next digit (9) from the dividend, add it to 30, then carry on: 309 / 73

Step 3:
When dividing 309 by 73, we get 4 with a remainder of 17.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 292 from 309 and we're left with 17.
Append the next digit (0) from the dividend to 17 and continue with: 170 / 73

Advancing to step 4:
170 divided by 73 is 2 with a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 42.0
Subtract 146 from 170 to get 24.
Bring next digit (0) of the dividend behind the 24 and repeat the process: 240 / 73

On to step 5:
240 divided by 73 is 3 with a remainder of 21.
The next digit of our result is 3. 
Result so far: 423.0
The remainder is 21 after subtracting 219 from 240.
Bring next digit (8) of the dividend behind the 21 and repeat the process: 218 / 73

On to step 6:
When dividing 218 by 73, we get 2 with a remainder of 72.
The next digit of our result is 2. 
Result so far: 4232.0
Subtracting 146 from 218 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 7:
When dividing 720 by 73, we get 9 with a remainder of 63.
Use 9 as the next digit of our solution. 
Result so far: 4232.9
The remainder is 63 after subtracting 657 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

On to step 8:
73 goes into 630 8 times with a remainder of 46.
The number 8 becomes the next digit in our result. 
Result so far: 4232.98
Subtract 584 from 630 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 9:
73 goes into 460 6 times with a remainder of 22.
Put 6 as the next digit of the answer. 
Result so far: 4232.986
If we subtract 438 from 460, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 10:
73 goes into 220 3 times with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 4232.9863
Deduct 219 from 220 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 11:
The number 73 fits into 10 0 times, leaving a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 4232.9863
Subtract 0 from 10 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.

Let's proceed to step 12:
73 can be fit into 100 1 times, resulting in a remainder of 27.
Record the quotient 1 as the next digit in the result. 
Result so far: 4232.986301
If we take 73 away from 100, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 13:
When dividing 270 by 73, we get 3 with a remainder of 51.
The next digit of our result is 3. 
Result so far: 4232.9863013
Deduct 219 from 270 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Moving on to step 14:
510 divided by 73 is 6 with a remainder of 72.
Put 6 as the next digit of the answer. 
Result so far: 4232.98630136
Subtracting 438 from 510 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Our division results in 4232.98630136 with a remaining 7.2e-08.