We're dividing 879392 by 45 
Let's see how many times 45 fits into 879392.

Moving on to step 1:
The number 45 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 45

Advancing to step 2:
When dividing 87 by 45, we get 1 with a remainder of 42.
The next digit of our result is 1. 
Result so far: 1.0
If we take 45 away from 87, we end up with 42.
Fetch the next digit (9) from the dividend, attach it to 42 and continue: 429 / 45

Advancing to step 3:
If we divide 429 by 45, we get 9 and a remainder of 24.
The next digit of our result is 9. 
Result so far: 19.0
If we take 405 away from 429, we end up with 24.
Grab the next digit (3) from the dividend, add it to 24, then carry on: 243 / 45

Step 4:
When dividing 243 by 45, we get 5 with a remainder of 18.
The number 5 becomes the next digit in our result. 
Result so far: 195.0
If we take 225 away from 243, we end up with 18.
Grab the next digit (9) from the dividend, add it to 18, then carry on: 189 / 45

On to step 5:
When dividing 189 by 45, we get 4 with a remainder of 9.
The next digit of our result is 4. 
Result so far: 1954.0
Subtract 180 from 189 to get 9.
Take the next digit (2) from the dividend and append it to 9, then repeat: 92 / 45

Let's proceed to step 6:
When dividing 92 by 45, we get 2 with a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 19542.0
Deduct 90 from 92 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 7:
20 divided by 45 is 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 19542.0
Deduct 0 from 20 and we're left with 20.
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:
When dividing 200 by 45, we get 4 with a remainder of 20.
The next digit of our result is 4. 
Result so far: 19542.04
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.

Moving on to step 9:
If we divide 200 by 45, we get 4 and a remainder of 20.
Put 4 as the next digit of the answer. 
Result so far: 19542.044
Subtract 180 from 200 to 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 19542.044, with a leftover of 0.002.