66122449 ÷ 378 
Let's see how many times 378 fits into 66122449.

Let's proceed to step 1:
The number 378 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 378

On to step 2:
If we divide 66 by 378, we get 0 and a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Include the next digit (1) from the dividend after 66, then repeat: 661 / 378

On to step 3:
When dividing 661 by 378, we get 1 with a remainder of 283.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 378 from 661 to get 283.
Bring next digit (2) of the dividend behind the 283 and repeat the process: 2832 / 378

Moving on to step 4:
378 can be fit into 2832 7 times, resulting in a remainder of 186.
Put 7 as the next digit of the answer. 
Result so far: 17.0
The remainder is 186 after subtracting 2646 from 2832.
Bring next digit (2) of the dividend behind the 186 and repeat the process: 1862 / 378

Advancing to step 5:
378 goes into 1862 4 times with a remainder of 350.
Write down 4 as next digit of the result. 
Result so far: 174.0
Subtracting 1512 from 1862 leaves us with 350.
Take the next digit (4) from the dividend and append it to 350, then repeat: 3504 / 378

On to step 6:
378 goes into 3504 9 times with a remainder of 102.
Put 9 as the next digit of the answer. 
Result so far: 1749.0
Deduct 3402 from 3504 and we're left with 102.
Grab the next digit (4) from the dividend, add it to 102, then carry on: 1024 / 378

Moving on to step 7:
When dividing 1024 by 378, we get 2 with a remainder of 268.
Put 2 as the next digit of the answer. 
Result so far: 17492.0
Subtracting 756 from 1024 leaves us with 268.
Include the next digit (9) from the dividend after 268, then repeat: 2689 / 378

Going ahead to step 8:
2689 divided by 378 is 7 with a remainder of 43.
The number 7 becomes the next digit in our result. 
Result so far: 174927.0
If we subtract 2646 from 2689, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 9:
The number 378 fits into 430 1 times, leaving a remainder of 52.
Put 1 as the next digit of the answer. 
Result so far: 174927.1
If we subtract 378 from 430, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 10:
520 divided by 378 is 1 with a remainder of 142.
The number 1 becomes the next digit in our result. 
Result so far: 174927.11
Deduct 378 from 520 and we're left with 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

The quotient of the division is 174927.11, and the remainder is 0.142.