We're dividing 84307457 by 378 
We want to divide 84307457 by 378.

Moving on to step 1:
When dividing 8 by 378, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 378

Going ahead to step 2:
378 can be fit into 84 0 times, resulting in a remainder of 84.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 84 to get 84.
Include the next digit (3) from the dividend after 84, then repeat: 843 / 378

Let's proceed to step 3:
When dividing 843 by 378, we get 2 with a remainder of 87.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 87 after subtracting 756 from 843.
Include the next digit (0) from the dividend after 87, then repeat: 870 / 378

Step 4:
870 divided by 378 is 2 with a remainder of 114.
Put 2 as the next digit of the answer. 
Result so far: 22.0
Deduct 756 from 870 and we're left with 114.
Grab the next digit (7) from the dividend, add it to 114, then carry on: 1147 / 378

Advancing to step 5:
378 can be fit into 1147 3 times, resulting in a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 223.0
Subtract 1134 from 1147 to get 13.
Fetch the next digit (4) from the dividend, attach it to 13 and continue: 134 / 378

Let's proceed to step 6:
134 divided by 378 is 0 with a remainder of 134.
The number 0 becomes the next digit in our result. 
Result so far: 2230.0
Subtracting 0 from 134 leaves us with 134.
Take the next digit (5) from the dividend and append it to 134, then repeat: 1345 / 378

Going ahead to step 7:
When dividing 1345 by 378, we get 3 with a remainder of 211.
Use 3 as the next digit of our solution. 
Result so far: 22303.0
Subtracting 1134 from 1345 leaves us with 211.
Include the next digit (7) from the dividend after 211, then repeat: 2117 / 378

Let's proceed to step 8:
2117 divided by 378 is 5 with a remainder of 227.
Record the quotient 5 as the next digit in the result. 
Result so far: 223035.0
If we take 1890 away from 2117, we end up with 227.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Step 9:
378 goes into 2270 6 times with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 223035.6
The remainder is 2 after subtracting 2268 from 2270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 10:
The number 378 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 223035.6
Subtract 0 from 20 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.

Advancing to step 11:
378 can be fit into 200 0 times, resulting in a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 223035.6
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The final outcome is 223035.6, with a leftover of 0.02.