77438181 ÷ 393 
We're looking to find how many times 393 goes into 77438181.

Advancing to step 1:
393 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 393

Moving on to step 2:
The number 393 fits into 77 0 times, leaving a remainder of 77.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 77 to get 77.
Take the next digit (4) from the dividend and append it to 77, then repeat: 774 / 393

Going ahead to step 3:
774 divided by 393 is 1 with a remainder of 381.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 393 from 774 leaves us with 381.
Take the next digit (3) from the dividend and append it to 381, then repeat: 3813 / 393

Moving on to step 4:
The number 393 fits into 3813 9 times, leaving a remainder of 276.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Subtracting 3537 from 3813 leaves us with 276.
Append the next digit (8) from the dividend to 276 and continue with: 2768 / 393

Advancing to step 5:
If we divide 2768 by 393, we get 7 and a remainder of 17.
Record the quotient 7 as the next digit in the result. 
Result so far: 197.0
If we take 2751 away from 2768, we end up with 17.
Include the next digit (1) from the dividend after 17, then repeat: 171 / 393

Let's proceed to step 6:
393 goes into 171 0 times with a remainder of 171.
Record the quotient 0 as the next digit in the result. 
Result so far: 1970.0
The remainder is 171 after subtracting 0 from 171.
Bring next digit (8) of the dividend behind the 171 and repeat the process: 1718 / 393

Moving on to step 7:
393 goes into 1718 4 times with a remainder of 146.
Put 4 as the next digit of the answer. 
Result so far: 19704.0
Subtracting 1572 from 1718 leaves us with 146.
Fetch the next digit (1) from the dividend, attach it to 146 and continue: 1461 / 393

Step 8:
If we divide 1461 by 393, we get 3 and a remainder of 282.
The number 3 becomes the next digit in our result. 
Result so far: 197043.0
Subtract 1179 from 1461 to get 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Let's proceed to step 9:
If we divide 2820 by 393, we get 7 and a remainder of 69.
Record the quotient 7 as the next digit in the result. 
Result so far: 197043.7
Deduct 2751 from 2820 and we're left with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Let's proceed to step 10:
690 divided by 393 is 1 with a remainder of 297.
Put 1 as the next digit of the answer. 
Result so far: 197043.71
The remainder is 297 after subtracting 393 from 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Step 11:
The number 393 fits into 2970 7 times, leaving a remainder of 219.
Record the quotient 7 as the next digit in the result. 
Result so far: 197043.717
Subtracting 2751 from 2970 leaves us with 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

Moving on to step 12:
393 can be fit into 2190 5 times, resulting in a remainder of 225.
The number 5 becomes the next digit in our result. 
Result so far: 197043.7175
If we subtract 1965 from 2190, we get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Going ahead to step 13:
393 can be fit into 2250 5 times, resulting in a remainder of 285.
Put 5 as the next digit of the answer. 
Result so far: 197043.71755
If we subtract 1965 from 2250, we get 285.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

The final outcome is 197043.71755, with a leftover of 0.000285.