16556946 ÷ 378 
We want to figure out the number of times 16556946 can be divided by 378.

Going ahead to step 1:
If we divide 1 by 378, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 378

On to step 2:
16 divided by 378 is 0 with a remainder of 16.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 16 after subtracting 0 from 16.
Take the next digit (5) from the dividend and append it to 16, then repeat: 165 / 378

Step 3:
378 can be fit into 165 0 times, resulting in a remainder of 165.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 165 to get 165.
Append the next digit (5) from the dividend to 165 and continue with: 1655 / 378

Going ahead to step 4:
When dividing 1655 by 378, we get 4 with a remainder of 143.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 1512 from 1655 and we're left with 143.
Append the next digit (6) from the dividend to 143 and continue with: 1436 / 378

On to step 5:
378 can be fit into 1436 3 times, resulting in a remainder of 302.
Put 3 as the next digit of the answer. 
Result so far: 43.0
Subtracting 1134 from 1436 leaves us with 302.
Take the next digit (9) from the dividend and append it to 302, then repeat: 3029 / 378

Going ahead to step 6:
3029 divided by 378 is 8 with a remainder of 5.
The next digit of our result is 8. 
Result so far: 438.0
The remainder is 5 after subtracting 3024 from 3029.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 378

Advancing to step 7:
378 goes into 54 0 times with a remainder of 54.
Record the quotient 0 as the next digit in the result. 
Result so far: 4380.0
The remainder is 54 after subtracting 0 from 54.
Fetch the next digit (6) from the dividend, attach it to 54 and continue: 546 / 378

Moving on to step 8:
378 goes into 546 1 times with a remainder of 168.
The number 1 becomes the next digit in our result. 
Result so far: 43801.0
Deduct 378 from 546 and we're left with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Moving on to step 9:
378 goes into 1680 4 times with a remainder of 168.
Record the quotient 4 as the next digit in the result. 
Result so far: 43801.4
The remainder is 168 after subtracting 1512 from 1680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Moving on to step 10:
The number 378 fits into 1680 4 times, leaving a remainder of 168.
Write down 4 as next digit of the result. 
Result so far: 43801.44
If we subtract 1512 from 1680, we get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

The final outcome is 43801.44, with a leftover of 0.168.