We look at the division of 1366343 by 378 
We want to figure out the number of times 1366343 can be divided by 378.

Moving on to step 1:
378 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 378

Step 2:
378 can be fit into 13 0 times, resulting in a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 13 to get 13.
Include the next digit (6) from the dividend after 13, then repeat: 136 / 378

Going ahead to step 3:
The number 378 fits into 136 0 times, leaving a remainder of 136.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 136 after subtracting 0 from 136.
Fetch the next digit (6) from the dividend, attach it to 136 and continue: 1366 / 378

Step 4:
If we divide 1366 by 378, we get 3 and a remainder of 232.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 1134 from 1366 to get 232.
Take the next digit (3) from the dividend and append it to 232, then repeat: 2323 / 378

Step 5:
If we divide 2323 by 378, we get 6 and a remainder of 55.
The number 6 becomes the next digit in our result. 
Result so far: 36.0
If we take 2268 away from 2323, we end up with 55.
Fetch the next digit (4) from the dividend, attach it to 55 and continue: 554 / 378

Advancing to step 6:
When dividing 554 by 378, we get 1 with a remainder of 176.
Put 1 as the next digit of the answer. 
Result so far: 361.0
If we subtract 378 from 554, we get 176.
Grab the next digit (3) from the dividend, add it to 176, then carry on: 1763 / 378

Moving on to step 7:
378 goes into 1763 4 times with a remainder of 251.
The number 4 becomes the next digit in our result. 
Result so far: 3614.0
Deduct 1512 from 1763 and we're left with 251.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2510, and continue the process.

Step 8:
378 can be fit into 2510 6 times, resulting in a remainder of 242.
The next digit of our result is 6. 
Result so far: 3614.6
Subtract 2268 from 2510 to get 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Step 9:
378 goes into 2420 6 times with a remainder of 152.
The next digit of our result is 6. 
Result so far: 3614.66
If we subtract 2268 from 2420, we get 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Our division results in 3614.66 with a remaining 0.152.