Let's divide 30405854 by 78
Let's see how many times 78 fits into 30405854.

Step 1:
If we divide 3 by 78, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 78

Step 2:
78 goes into 30 0 times with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 30 after subtracting 0 from 30.
Fetch the next digit (4) from the dividend, attach it to 30 and continue: 304 / 78

Moving on to step 3:
78 goes into 304 3 times with a remainder of 70.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we subtract 234 from 304, we get 70.
Take the next digit (0) from the dividend and append it to 70, then repeat: 700 / 78

Advancing to step 4:
700 divided by 78 is 8 with a remainder of 76.
The number 8 becomes the next digit in our result. 
Result so far: 38.0
If we subtract 624 from 700, we get 76.
Grab the next digit (5) from the dividend, add it to 76, then carry on: 765 / 78

Advancing to step 5:
The number 78 fits into 765 9 times, leaving a remainder of 63.
Write down 9 as next digit of the result. 
Result so far: 389.0
Subtracting 702 from 765 leaves us with 63.
Grab the next digit (8) from the dividend, add it to 63, then carry on: 638 / 78

Let's proceed to step 6:
638 divided by 78 is 8 with a remainder of 14.
Use 8 as the next digit of our solution. 
Result so far: 3898.0
Subtract 624 from 638 to get 14.
Grab the next digit (5) from the dividend, add it to 14, then carry on: 145 / 78

On to step 7:
If we divide 145 by 78, we get 1 and a remainder of 67.
Use 1 as the next digit of our solution. 
Result so far: 38981.0
Deduct 78 from 145 and we're left with 67.
Bring next digit (4) of the dividend behind the 67 and repeat the process: 674 / 78

Moving on to step 8:
The number 78 fits into 674 8 times, leaving a remainder of 50.
Use 8 as the next digit of our solution. 
Result so far: 389818.0
The remainder is 50 after subtracting 624 from 674.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 9:
500 divided by 78 is 6 with a remainder of 32.
Write down 6 as next digit of the result. 
Result so far: 389818.6
The remainder is 32 after subtracting 468 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 10:
The number 78 fits into 320 4 times, leaving a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 389818.64
Subtracting 312 from 320 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 11:
If we divide 80 by 78, we get 1 and a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 389818.641
Subtracting 78 from 80 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 12:
The number 78 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 389818.641
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 13:
78 can be fit into 200 2 times, resulting in a remainder of 44.
Use 2 as the next digit of our solution. 
Result so far: 389818.64102
If we take 156 away from 200, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 14:
78 can be fit into 440 5 times, resulting in a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 389818.641025
If we subtract 390 from 440, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 15:
78 goes into 500 6 times with a remainder of 32.
Record the quotient 6 as the next digit in the result. 
Result so far: 389818.6410256
Subtract 468 from 500 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 16:
The number 78 fits into 320 4 times, leaving a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 389818.64102564
Subtract 312 from 320 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 389818.64102564 with a remaining 8e-09.