We divide 858188 by 45
Let's see how many times 45 fits into 858188.

Moving on to step 1:
When dividing 8 by 45, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 45

Advancing to step 2:
45 can be fit into 85 1 times, resulting in a remainder of 40.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 45 from 85, we get 40.
Include the next digit (8) from the dividend after 40, then repeat: 408 / 45

Advancing to step 3:
When dividing 408 by 45, we get 9 with a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
Deduct 405 from 408 and we're left with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 45

On to step 4:
45 can be fit into 31 0 times, resulting in a remainder of 31.
The next digit of our result is 0. 
Result so far: 190.0
The remainder is 31 after subtracting 0 from 31.
Include the next digit (8) from the dividend after 31, then repeat: 318 / 45

Going ahead to step 5:
When dividing 318 by 45, we get 7 with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 1907.0
The remainder is 3 after subtracting 315 from 318.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 45

Going ahead to step 6:
45 goes into 38 0 times with a remainder of 38.
The next digit of our result is 0. 
Result so far: 19070.0
Deduct 0 from 38 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 7:
45 goes into 380 8 times with a remainder of 20.
Write down 8 as next digit of the result. 
Result so far: 19070.8
The remainder is 20 after subtracting 360 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 8:
200 divided by 45 is 4 with a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 19070.84
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 9:
200 divided by 45 is 4 with a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 19070.844
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 19070.844, with a leftover of 0.002.