We look at the division of 20507361 by 378 
We want to figure out the number of times 20507361 can be divided by 378.

Step 1:
378 goes into 2 0 times with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 378

On to step 2:
If we divide 20 by 378, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 20, we get 20.
Include the next digit (5) from the dividend after 20, then repeat: 205 / 378

Going ahead to step 3:
If we divide 205 by 378, we get 0 and a remainder of 205.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 205, we end up with 205.
Bring next digit (0) of the dividend behind the 205 and repeat the process: 2050 / 378

On to step 4:
378 can be fit into 2050 5 times, resulting in a remainder of 160.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we subtract 1890 from 2050, we get 160.
Take the next digit (7) from the dividend and append it to 160, then repeat: 1607 / 378

Going ahead to step 5:
When dividing 1607 by 378, we get 4 with a remainder of 95.
Record the quotient 4 as the next digit in the result. 
Result so far: 54.0
Subtract 1512 from 1607 to get 95.
Bring next digit (3) of the dividend behind the 95 and repeat the process: 953 / 378

Step 6:
If we divide 953 by 378, we get 2 and a remainder of 197.
The next digit of our result is 2. 
Result so far: 542.0
Subtracting 756 from 953 leaves us with 197.
Include the next digit (6) from the dividend after 197, then repeat: 1976 / 378

Moving on to step 7:
If we divide 1976 by 378, we get 5 and a remainder of 86.
Record the quotient 5 as the next digit in the result. 
Result so far: 5425.0
Deduct 1890 from 1976 and we're left with 86.
Append the next digit (1) from the dividend to 86 and continue with: 861 / 378

Moving on to step 8:
861 divided by 378 is 2 with a remainder of 105.
Put 2 as the next digit of the answer. 
Result so far: 54252.0
Subtract 756 from 861 to get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Step 9:
378 goes into 1050 2 times with a remainder of 294.
The number 2 becomes the next digit in our result. 
Result so far: 54252.2
Subtract 756 from 1050 to get 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Advancing to step 10:
378 can be fit into 2940 7 times, resulting in a remainder of 294.
The number 7 becomes the next digit in our result. 
Result so far: 54252.27
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.

Step 11:
When dividing 2940 by 378, we get 7 with a remainder of 294.
The next digit of our result is 7. 
Result so far: 54252.277
If we subtract 2646 from 2940, we get 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

The final result is 54252.277 with a remainder of 0.0294.