We're dividing 157243 by 79 
We want to figure out the number of times 157243 can be divided by 79.

Advancing to step 1:
The number 79 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 79

Going ahead to step 2:
The number 79 fits into 15 0 times, leaving a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Include the next digit (7) from the dividend after 15, then repeat: 157 / 79

Moving on to step 3:
The number 79 fits into 157 1 times, leaving a remainder of 78.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 79 from 157 leaves us with 78.
Include the next digit (2) from the dividend after 78, then repeat: 782 / 79

Advancing to step 4:
782 divided by 79 is 9 with a remainder of 71.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
If we subtract 711 from 782, we get 71.
Include the next digit (4) from the dividend after 71, then repeat: 714 / 79

On to step 5:
714 divided by 79 is 9 with a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 199.0
The remainder is 3 after subtracting 711 from 714.
Append the next digit (3) from the dividend to 3 and continue with: 33 / 79

On to step 6:
If we divide 33 by 79, we get 0 and a remainder of 33.
Use 0 as the next digit of our solution. 
Result so far: 1990.0
If we take 0 away from 33, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 7:
The number 79 fits into 330 4 times, leaving a remainder of 14.
The next digit of our result is 4. 
Result so far: 1990.4
Subtracting 316 from 330 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 8:
140 divided by 79 is 1 with a remainder of 61.
Use 1 as the next digit of our solution. 
Result so far: 1990.41
Deduct 79 from 140 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Going ahead to step 9:
The number 79 fits into 610 7 times, leaving a remainder of 57.
The next digit of our result is 7. 
Result so far: 1990.417
If we take 553 away from 610, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 10:
79 goes into 570 7 times with a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 1990.4177
Deduct 553 from 570 and we're left with 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 1990.4177 with a remainder of 0.00017.