We're dividing 858460 by 75 
Let's see how many times 75 fits into 858460.

On to step 1:
When dividing 8 by 75, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 75

Let's proceed to step 2:
85 divided by 75 is 1 with a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 75 away from 85, we end up with 10.
Include the next digit (8) from the dividend after 10, then repeat: 108 / 75

Let's proceed to step 3:
75 can be fit into 108 1 times, resulting in a remainder of 33.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Subtracting 75 from 108 leaves us with 33.
Fetch the next digit (4) from the dividend, attach it to 33 and continue: 334 / 75

Going ahead to step 4:
The number 75 fits into 334 4 times, leaving a remainder of 34.
The next digit of our result is 4. 
Result so far: 114.0
If we subtract 300 from 334, we get 34.
Bring next digit (6) of the dividend behind the 34 and repeat the process: 346 / 75

Step 5:
When dividing 346 by 75, we get 4 with a remainder of 46.
Record the quotient 4 as the next digit in the result. 
Result so far: 1144.0
If we take 300 away from 346, we end up with 46.
Fetch the next digit (0) from the dividend, attach it to 46 and continue: 460 / 75

On to step 6:
The number 75 fits into 460 6 times, leaving a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 11446.0
Subtracting 450 from 460 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 7:
The number 75 fits into 100 1 times, leaving a remainder of 25.
Put 1 as the next digit of the answer. 
Result so far: 11446.1
If we subtract 75 from 100, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 8:
When dividing 250 by 75, we get 3 with a remainder of 25.
Record the quotient 3 as the next digit in the result. 
Result so far: 11446.13
Deduct 225 from 250 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 9:
75 can be fit into 250 3 times, resulting in a remainder of 25.
Record the quotient 3 as the next digit in the result. 
Result so far: 11446.133
The remainder is 25 after subtracting 225 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The final result is 11446.133 with a remainder of 0.0025.