We're dividing 309825 by 79 
Our goal is to divide 309825 by 79.

Advancing to step 1:
3 divided by 79 is 0 with 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.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 79

Let's proceed to step 2:
79 goes into 30 0 times with a remainder of 30.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 30 to get 30.
Fetch the next digit (9) from the dividend, attach it to 30 and continue: 309 / 79

Moving on to step 3:
The number 79 fits into 309 3 times, leaving a remainder of 72.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we subtract 237 from 309, we get 72.
Include the next digit (8) from the dividend after 72, then repeat: 728 / 79

Step 4:
When dividing 728 by 79, we get 9 with a remainder of 17.
Put 9 as the next digit of the answer. 
Result so far: 39.0
Subtracting 711 from 728 leaves us with 17.
Fetch the next digit (2) from the dividend, attach it to 17 and continue: 172 / 79

Moving on to step 5:
When dividing 172 by 79, we get 2 with a remainder of 14.
Use 2 as the next digit of our solution. 
Result so far: 392.0
Subtracting 158 from 172 leaves us with 14.
Grab the next digit (5) from the dividend, add it to 14, then carry on: 145 / 79

Going ahead to step 6:
If we divide 145 by 79, we get 1 and a remainder of 66.
The number 1 becomes the next digit in our result. 
Result so far: 3921.0
Deduct 79 from 145 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 7:
79 goes into 660 8 times with a remainder of 28.
Use 8 as the next digit of our solution. 
Result so far: 3921.8
Subtract 632 from 660 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 8:
The number 79 fits into 280 3 times, leaving a remainder of 43.
Use 3 as the next digit of our solution. 
Result so far: 3921.83
Subtract 237 from 280 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Moving on to step 9:
79 goes into 430 5 times with a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 3921.835
If we take 395 away from 430, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 10:
When dividing 350 by 79, we get 4 with a remainder of 34.
Record the quotient 4 as the next digit in the result. 
Result so far: 3921.8354
Deduct 316 from 350 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 11:
79 can be fit into 340 4 times, resulting in a remainder of 24.
Use 4 as the next digit of our solution. 
Result so far: 3921.83544
Deduct 316 from 340 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

After the division, we end up with 3921.83544 and a remainder of 2.4e-05.