29910678 ÷ 378 
Our goal is to divide 29910678 by 378.

Let's proceed to step 1:
378 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 378

Going ahead to step 2:
378 can be fit into 29 0 times, resulting in a remainder of 29.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 29 after subtracting 0 from 29.
Bring next digit (9) of the dividend behind the 29 and repeat the process: 299 / 378

Moving on to step 3:
299 divided by 378 is 0 with a remainder of 299.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 299 leaves us with 299.
Bring next digit (1) of the dividend behind the 299 and repeat the process: 2991 / 378

On to step 4:
378 goes into 2991 7 times with a remainder of 345.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Deduct 2646 from 2991 and we're left with 345.
Take the next digit (0) from the dividend and append it to 345, then repeat: 3450 / 378

Moving on to step 5:
378 can be fit into 3450 9 times, resulting in a remainder of 48.
Put 9 as the next digit of the answer. 
Result so far: 79.0
The remainder is 48 after subtracting 3402 from 3450.
Include the next digit (6) from the dividend after 48, then repeat: 486 / 378

Going ahead to step 6:
If we divide 486 by 378, we get 1 and a remainder of 108.
The next digit of our result is 1. 
Result so far: 791.0
If we subtract 378 from 486, we get 108.
Fetch the next digit (7) from the dividend, attach it to 108 and continue: 1087 / 378

Advancing to step 7:
378 can be fit into 1087 2 times, resulting in a remainder of 331.
Write down 2 as next digit of the result. 
Result so far: 7912.0
Deduct 756 from 1087 and we're left with 331.
Append the next digit (8) from the dividend to 331 and continue with: 3318 / 378

On to step 8:
If we divide 3318 by 378, we get 8 and a remainder of 294.
The next digit of our result is 8. 
Result so far: 79128.0
If we take 3024 away from 3318, we end up with 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

On to step 9:
The number 378 fits into 2940 7 times, leaving a remainder of 294.
Use 7 as the next digit of our solution. 
Result so far: 79128.7
If we take 2646 away from 2940, we end up with 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Let's proceed to step 10:
378 goes into 2940 7 times with a remainder of 294.
The number 7 becomes the next digit in our result. 
Result so far: 79128.77
Deduct 2646 from 2940 and we're left with 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

After the division, we end up with 79128.77 and a remainder of 0.294.