72489 divided by 1 
We want to figure out the number of times 72489 can be divided by 1.

Let's proceed to step 1:
7 divided by 1 is 7 with a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Deduct 7 from 7 and we're left with 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 1

Let's proceed to step 2:
The number 1 fits into 2 2 times, leaving a remainder of 0.
The next digit of our result is 2. 
Result so far: 72.0
Subtracting 2 from 2 leaves us with 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 1

Let's proceed to step 3:
4 divided by 1 is 4 with a remainder of 0.
The next digit of our result is 4. 
Result so far: 724.0
If we take 4 away from 4, we end up with 0.
Take the next digit (8) from the dividend and append it to 0, then repeat: 8 / 1

Moving on to step 4:
When dividing 8 by 1, we get 8 with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 7248.0
If we subtract 8 from 8, we get 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 1

Step 5:
When dividing 9 by 1, we get 9 with a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 72489.0
Subtracting 9 from 9 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 6:
The number 1 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 72489.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 7:
The number 1 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 72489.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 72489.0, with a leftover of 0.0.