79990380 ÷ 678 
We want to figure out the number of times 79990380 can be divided by 678.

Let's proceed to step 1:
678 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
The remainder is 7 after subtracting 0 from 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 678

Going ahead to step 2:
The number 678 fits into 79 0 times, leaving a remainder of 79.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 79 to get 79.
Bring next digit (9) of the dividend behind the 79 and repeat the process: 799 / 678

Moving on to step 3:
The number 678 fits into 799 1 times, leaving a remainder of 121.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 121 after subtracting 678 from 799.
Bring next digit (9) of the dividend behind the 121 and repeat the process: 1219 / 678

Step 4:
1219 divided by 678 is 1 with a remainder of 541.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtracting 678 from 1219 leaves us with 541.
Bring next digit (0) of the dividend behind the 541 and repeat the process: 5410 / 678

On to step 5:
5410 divided by 678 is 7 with a remainder of 664.
The number 7 becomes the next digit in our result. 
Result so far: 117.0
Subtracting 4746 from 5410 leaves us with 664.
Fetch the next digit (3) from the dividend, attach it to 664 and continue: 6643 / 678

Advancing to step 6:
The number 678 fits into 6643 9 times, leaving a remainder of 541.
Record the quotient 9 as the next digit in the result. 
Result so far: 1179.0
If we take 6102 away from 6643, we end up with 541.
Bring next digit (8) of the dividend behind the 541 and repeat the process: 5418 / 678

Moving on to step 7:
678 can be fit into 5418 7 times, resulting in a remainder of 672.
The number 7 becomes the next digit in our result. 
Result so far: 11797.0
If we subtract 4746 from 5418, we get 672.
Bring next digit (0) of the dividend behind the 672 and repeat the process: 6720 / 678

On to step 8:
If we divide 6720 by 678, we get 9 and a remainder of 618.
Write down 9 as next digit of the result. 
Result so far: 117979.0
The remainder is 618 after subtracting 6102 from 6720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Step 9:
678 can be fit into 6180 9 times, resulting in a remainder of 78.
The number 9 becomes the next digit in our result. 
Result so far: 117979.9
Subtract 6102 from 6180 to get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Advancing to step 10:
678 can be fit into 780 1 times, resulting in a remainder of 102.
Write down 1 as next digit of the result. 
Result so far: 117979.91
Subtract 678 from 780 to get 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

On to step 11:
678 can be fit into 1020 1 times, resulting in a remainder of 342.
Write down 1 as next digit of the result. 
Result so far: 117979.911
The remainder is 342 after subtracting 678 from 1020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

After the division, we end up with 117979.911 and a remainder of 0.0342.