We look at the division of 57309 by 74 
We're looking to find how many times 74 goes into 57309.

On to step 1:
If we divide 5 by 74, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 74

On to step 2:
74 can be fit into 57 0 times, resulting in a remainder of 57.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 57 after subtracting 0 from 57.
Append the next digit (3) from the dividend to 57 and continue with: 573 / 74

Going ahead to step 3:
If we divide 573 by 74, we get 7 and a remainder of 55.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
The remainder is 55 after subtracting 518 from 573.
Grab the next digit (0) from the dividend, add it to 55, then carry on: 550 / 74

Step 4:
74 goes into 550 7 times with a remainder of 32.
Use 7 as the next digit of our solution. 
Result so far: 77.0
If we take 518 away from 550, we end up with 32.
Fetch the next digit (9) from the dividend, attach it to 32 and continue: 329 / 74

Advancing to step 5:
The number 74 fits into 329 4 times, leaving a remainder of 33.
The next digit of our result is 4. 
Result so far: 774.0
If we subtract 296 from 329, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Advancing to step 6:
When dividing 330 by 74, we get 4 with a remainder of 34.
The number 4 becomes the next digit in our result. 
Result so far: 774.4
If we subtract 296 from 330, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 7:
74 can be fit into 340 4 times, resulting in a remainder of 44.
The number 4 becomes the next digit in our result. 
Result so far: 774.44
The remainder is 44 after subtracting 296 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

The final result is 774.44 with a remainder of 0.044.