We're dividing 70392170 by 72 
We want to figure out the number of times 70392170 can be divided by 72.

Advancing to step 1:
If we divide 7 by 72, we get 0 and a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (0) from the dividend and append it to 7, then repeat: 70 / 72

Let's proceed to step 2:
72 goes into 70 0 times with a remainder of 70.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 70 to get 70.
Grab the next digit (3) from the dividend, add it to 70, then carry on: 703 / 72

On to step 3:
If we divide 703 by 72, we get 9 and a remainder of 55.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
The remainder is 55 after subtracting 648 from 703.
Grab the next digit (9) from the dividend, add it to 55, then carry on: 559 / 72

On to step 4:
559 divided by 72 is 7 with a remainder of 55.
The next digit of our result is 7. 
Result so far: 97.0
If we take 504 away from 559, we end up with 55.
Append the next digit (2) from the dividend to 55 and continue with: 552 / 72

Let's proceed to step 5:
72 goes into 552 7 times with a remainder of 48.
The number 7 becomes the next digit in our result. 
Result so far: 977.0
The remainder is 48 after subtracting 504 from 552.
Append the next digit (1) from the dividend to 48 and continue with: 481 / 72

Advancing to step 6:
If we divide 481 by 72, we get 6 and a remainder of 49.
The number 6 becomes the next digit in our result. 
Result so far: 9776.0
Subtract 432 from 481 to get 49.
Grab the next digit (7) from the dividend, add it to 49, then carry on: 497 / 72

Moving on to step 7:
72 can be fit into 497 6 times, resulting in a remainder of 65.
Write down 6 as next digit of the result. 
Result so far: 97766.0
The remainder is 65 after subtracting 432 from 497.
Grab the next digit (0) from the dividend, add it to 65, then carry on: 650 / 72

On to step 8:
The number 72 fits into 650 9 times, leaving a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 977669.0
Subtracting 648 from 650 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 9:
The number 72 fits into 20 0 times, leaving a remainder of 20.
The next digit of our result is 0. 
Result so far: 977669.0
Deduct 0 from 20 and we're left with 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 10:
The number 72 fits into 200 2 times, leaving a remainder of 56.
Write down 2 as next digit of the result. 
Result so far: 977669.02
Deduct 144 from 200 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.

Going ahead to step 11:
When dividing 560 by 72, we get 7 with a remainder of 56.
Record the quotient 7 as the next digit in the result. 
Result so far: 977669.027
Subtract 504 from 560 to 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.

On to step 12:
The number 72 fits into 560 7 times, leaving a remainder of 56.
The number 7 becomes the next digit in our result. 
Result so far: 977669.0277
Subtracting 504 from 560 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.

After the division, we end up with 977669.0277 and a remainder of 0.00056.