19970458 divided by 72 
We want to figure out the number of times 19970458 can be divided by 72.

Step 1:
When dividing 1 by 72, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 72

Step 2:
The number 72 fits into 19 0 times, leaving a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 19 to get 19.
Bring next digit (9) of the dividend behind the 19 and repeat the process: 199 / 72

Going ahead to step 3:
72 can be fit into 199 2 times, resulting in a remainder of 55.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 144 from 199, we get 55.
Fetch the next digit (7) from the dividend, attach it to 55 and continue: 557 / 72

Let's proceed to step 4:
When dividing 557 by 72, we get 7 with a remainder of 53.
Write down 7 as next digit of the result. 
Result so far: 27.0
Subtracting 504 from 557 leaves us with 53.
Fetch the next digit (0) from the dividend, attach it to 53 and continue: 530 / 72

Step 5:
72 goes into 530 7 times with a remainder of 26.
Record the quotient 7 as the next digit in the result. 
Result so far: 277.0
Deduct 504 from 530 and we're left with 26.
Grab the next digit (4) from the dividend, add it to 26, then carry on: 264 / 72

On to step 6:
If we divide 264 by 72, we get 3 and a remainder of 48.
Record the quotient 3 as the next digit in the result. 
Result so far: 2773.0
The remainder is 48 after subtracting 216 from 264.
Take the next digit (5) from the dividend and append it to 48, then repeat: 485 / 72

Let's proceed to step 7:
72 can be fit into 485 6 times, resulting in a remainder of 53.
The number 6 becomes the next digit in our result. 
Result so far: 27736.0
Subtract 432 from 485 to get 53.
Take the next digit (8) from the dividend and append it to 53, then repeat: 538 / 72

Moving on to step 8:
The number 72 fits into 538 7 times, leaving a remainder of 34.
Use 7 as the next digit of our solution. 
Result so far: 277367.0
If we subtract 504 from 538, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 9:
If we divide 340 by 72, we get 4 and a remainder of 52.
Write down 4 as next digit of the result. 
Result so far: 277367.4
The remainder is 52 after subtracting 288 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 10:
When dividing 520 by 72, we get 7 with a remainder of 16.
Record the quotient 7 as the next digit in the result. 
Result so far: 277367.47
Subtracting 504 from 520 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 11:
When dividing 160 by 72, we get 2 with a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 277367.472
Subtract 144 from 160 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 12:
The number 72 fits into 160 2 times, leaving a remainder of 16.
Record the quotient 2 as the next digit in the result. 
Result so far: 277367.4722
If we take 144 away from 160, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 277367.4722 with a remaining 0.00016.