515173 ÷ 79 
We want to divide 515173 by 79.

On to step 1:
If we divide 5 by 79, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 79

On to step 2:
If we divide 51 by 79, we get 0 and a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Fetch the next digit (5) from the dividend, attach it to 51 and continue: 515 / 79

Let's proceed to step 3:
The number 79 fits into 515 6 times, leaving a remainder of 41.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 474 from 515 leaves us with 41.
Include the next digit (1) from the dividend after 41, then repeat: 411 / 79

On to step 4:
The number 79 fits into 411 5 times, leaving a remainder of 16.
Write down 5 as next digit of the result. 
Result so far: 65.0
If we take 395 away from 411, we end up with 16.
Take the next digit (7) from the dividend and append it to 16, then repeat: 167 / 79

Step 5:
167 divided by 79 is 2 with a remainder of 9.
Record the quotient 2 as the next digit in the result. 
Result so far: 652.0
If we take 158 away from 167, we end up with 9.
Include the next digit (3) from the dividend after 9, then repeat: 93 / 79

Moving on to step 6:
When dividing 93 by 79, we get 1 with a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 6521.0
Subtract 79 from 93 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 7:
79 can be fit into 140 1 times, resulting in a remainder of 61.
The next digit of our result is 1. 
Result so far: 6521.1
Subtract 79 from 140 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

On to step 8:
When dividing 610 by 79, we get 7 with a remainder of 57.
Put 7 as the next digit of the answer. 
Result so far: 6521.17
If we subtract 553 from 610, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

On to step 9:
The number 79 fits into 570 7 times, leaving a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 6521.177
If we subtract 553 from 570, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The final result is 6521.177 with a remainder of 0.0017.