Let's divide 987573 by 1
We're looking to find how many times 1 goes into 987573.

On to step 1:
When dividing 9 by 1, we get 9 with a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
The remainder is 0 after subtracting 9 from 9.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 1

Going ahead to step 2:
The number 1 fits into 8 8 times, leaving a remainder of 0.
The next digit of our result is 8. 
Result so far: 98.0
The remainder is 0 after subtracting 8 from 8.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 1

Moving on to step 3:
1 can be fit into 7 7 times, resulting in a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 987.0
If we subtract 7 from 7, we get 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 1

Step 4:
The number 1 fits into 5 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 9875.0
If we take 5 away from 5, we end up with 0.
Grab the next digit (7) from the dividend, add it to 0, then carry on: 7 / 1

On to step 5:
When dividing 7 by 1, we get 7 with a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 98757.0
If we take 7 away from 7, we end up with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 1

Advancing to step 6:
If we divide 3 by 1, we get 3 and a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 987573.0
Subtract 3 from 3 to 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.

Advancing to step 7:
0 divided by 1 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 987573.0
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.

Moving on to step 8:
If we divide 0 by 1, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 987573.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 987573.0 and a remainder of 0.0.