378438 divided by 45 
We want to divide 378438 by 45.

Moving on to step 1:
3 divided by 45 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 45

Advancing to step 2:
45 goes into 37 0 times with a remainder of 37.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 37 and we're left with 37.
Fetch the next digit (8) from the dividend, attach it to 37 and continue: 378 / 45

Advancing to step 3:
45 can be fit into 378 8 times, resulting in a remainder of 18.
The next digit of our result is 8. 
Result so far: 8.0
The remainder is 18 after subtracting 360 from 378.
Append the next digit (4) from the dividend to 18 and continue with: 184 / 45

Moving on to step 4:
45 goes into 184 4 times with a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 84.0
Deduct 180 from 184 and we're left with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 45

Moving on to step 5:
43 divided by 45 is 0 with a remainder of 43.
The next digit of our result is 0. 
Result so far: 840.0
Deduct 0 from 43 and we're left with 43.
Fetch the next digit (8) from the dividend, attach it to 43 and continue: 438 / 45

Advancing to step 6:
If we divide 438 by 45, we get 9 and a remainder of 33.
Write down 9 as next digit of the result. 
Result so far: 8409.0
The remainder is 33 after subtracting 405 from 438.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Advancing to step 7:
When dividing 330 by 45, we get 7 with a remainder of 15.
The number 7 becomes the next digit in our result. 
Result so far: 8409.7
Subtract 315 from 330 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 8:
If we divide 150 by 45, we get 3 and a remainder of 15.
The next digit of our result is 3. 
Result so far: 8409.73
Subtract 135 from 150 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 9:
45 goes into 150 3 times with a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 8409.733
If we take 135 away from 150, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final result is 8409.733 with a remainder of 0.0015.