We're dividing 173979 by 30 
We want to figure out the number of times 173979 can be divided by 30.

On to step 1:
30 goes into 1 0 times with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 30

Step 2:
17 divided by 30 is 0 with a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Include the next digit (3) from the dividend after 17, then repeat: 173 / 30

Advancing to step 3:
If we divide 173 by 30, we get 5 and a remainder of 23.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
The remainder is 23 after subtracting 150 from 173.
Fetch the next digit (9) from the dividend, attach it to 23 and continue: 239 / 30

Going ahead to step 4:
When dividing 239 by 30, we get 7 with a remainder of 29.
Record the quotient 7 as the next digit in the result. 
Result so far: 57.0
The remainder is 29 after subtracting 210 from 239.
Bring next digit (7) of the dividend behind the 29 and repeat the process: 297 / 30

On to step 5:
The number 30 fits into 297 9 times, leaving a remainder of 27.
Record the quotient 9 as the next digit in the result. 
Result so far: 579.0
If we subtract 270 from 297, we get 27.
Grab the next digit (9) from the dividend, add it to 27, then carry on: 279 / 30

On to step 6:
The number 30 fits into 279 9 times, leaving a remainder of 9.
Record the quotient 9 as the next digit in the result. 
Result so far: 5799.0
If we take 270 away from 279, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
If we divide 90 by 30, we get 3 and a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 5799.3
If we subtract 90 from 90, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
30 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 5799.3
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
30 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 5799.3
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 5799.3, with a leftover of 0.0.