285840 divided by 10 
We want to figure out the number of times 285840 can be divided by 10.

Step 1:
When dividing 2 by 10, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 10

Let's proceed to step 2:
If we divide 28 by 10, we get 2 and a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 20 from 28 and we're left with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 10

Advancing to step 3:
10 can be fit into 85 8 times, resulting in a remainder of 5.
The next digit of our result is 8. 
Result so far: 28.0
Deduct 80 from 85 and we're left with 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 10

Going ahead to step 4:
The number 10 fits into 58 5 times, leaving a remainder of 8.
Use 5 as the next digit of our solution. 
Result so far: 285.0
Deduct 50 from 58 and we're left with 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 10

Advancing to step 5:
10 goes into 84 8 times with a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 2858.0
If we take 80 away from 84, we end up with 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 10

Step 6:
40 divided by 10 is 4 with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 28584.0
Deduct 40 from 40 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.

Going ahead to step 7:
10 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 28584.0
Subtracting 0 from 0 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.

Let's proceed to step 8:
10 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 28584.0
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 28584.0, with a leftover of 0.0.