We look at the division of 173990 by 72 
We want to figure out the number of times 173990 can be divided by 72.

On to step 1:
1 divided by 72 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 72

Step 2:
The number 72 fits into 17 0 times, leaving a remainder of 17.
Write down 0 as next digit of 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 / 72

Step 3:
When dividing 173 by 72, we get 2 with a remainder of 29.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 144 from 173 leaves us with 29.
Include the next digit (9) from the dividend after 29, then repeat: 299 / 72

Advancing to step 4:
72 can be fit into 299 4 times, resulting in a remainder of 11.
The next digit of our result is 4. 
Result so far: 24.0
If we take 288 away from 299, we end up with 11.
Append the next digit (9) from the dividend to 11 and continue with: 119 / 72

Step 5:
If we divide 119 by 72, we get 1 and a remainder of 47.
The number 1 becomes the next digit in our result. 
Result so far: 241.0
The remainder is 47 after subtracting 72 from 119.
Grab the next digit (0) from the dividend, add it to 47, then carry on: 470 / 72

Let's proceed to step 6:
72 goes into 470 6 times with a remainder of 38.
The number 6 becomes the next digit in our result. 
Result so far: 2416.0
Deduct 432 from 470 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 7:
380 divided by 72 is 5 with a remainder of 20.
The next digit of our result is 5. 
Result so far: 2416.5
Subtract 360 from 380 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
The number 72 fits into 200 2 times, leaving a remainder of 56.
Use 2 as the next digit of our solution. 
Result so far: 2416.52
Subtracting 144 from 200 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 9:
The number 72 fits into 560 7 times, leaving a remainder of 56.
Write down 7 as next digit of the result. 
Result so far: 2416.527
If we subtract 504 from 560, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 10:
560 divided by 72 is 7 with a remainder of 56.
Record the quotient 7 as the next digit in the result. 
Result so far: 2416.5277
Deduct 504 from 560 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

In conclusion, the division gives 2416.5277 with a balance of 0.00056.