We divide 77978909 by 13
Let's see how many times 13 fits into 77978909.

Moving on to step 1:
13 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 13

Moving on to step 2:
13 can be fit into 77 5 times, resulting in a remainder of 12.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we subtract 65 from 77, we get 12.
Fetch the next digit (9) from the dividend, attach it to 12 and continue: 129 / 13

Let's proceed to step 3:
13 goes into 129 9 times with a remainder of 12.
Put 9 as the next digit of the answer. 
Result so far: 59.0
If we subtract 117 from 129, we get 12.
Fetch the next digit (7) from the dividend, attach it to 12 and continue: 127 / 13

Going ahead to step 4:
127 divided by 13 is 9 with a remainder of 10.
The next digit of our result is 9. 
Result so far: 599.0
If we take 117 away from 127, we end up with 10.
Take the next digit (8) from the dividend and append it to 10, then repeat: 108 / 13

Advancing to step 5:
13 goes into 108 8 times with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 5998.0
If we take 104 away from 108, we end up with 4.
Take the next digit (9) from the dividend and append it to 4, then repeat: 49 / 13

Going ahead to step 6:
13 goes into 49 3 times with a remainder of 10.
Put 3 as the next digit of the answer. 
Result so far: 59983.0
If we subtract 39 from 49, we get 10.
Fetch the next digit (0) from the dividend, attach it to 10 and continue: 100 / 13

Advancing to step 7:
When dividing 100 by 13, we get 7 with a remainder of 9.
Use 7 as the next digit of our solution. 
Result so far: 599837.0
If we subtract 91 from 100, we get 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 13

Moving on to step 8:
99 divided by 13 is 7 with a remainder of 8.
The next digit of our result is 7. 
Result so far: 5998377.0
The remainder is 8 after subtracting 91 from 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 9:
13 goes into 80 6 times with a remainder of 2.
The next digit of our result is 6. 
Result so far: 5998377.6
The remainder is 2 after subtracting 78 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 10:
20 divided by 13 is 1 with a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 5998377.61
Subtracting 13 from 20 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 11:
13 can be fit into 70 5 times, resulting in a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 5998377.615
Subtracting 65 from 70 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 12:
If we divide 50 by 13, we get 3 and a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 5998377.6153
The remainder is 11 after subtracting 39 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 13:
13 can be fit into 110 8 times, resulting in a remainder of 6.
The next digit of our result is 8. 
Result so far: 5998377.61538
The remainder is 6 after subtracting 104 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 14:
If we divide 60 by 13, we get 4 and a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 5998377.615384
Deduct 52 from 60 and we're left 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.

Moving on to step 15:
The number 13 fits into 80 6 times, leaving a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 5998377.6153846
Subtract 78 from 80 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 16:
If we divide 20 by 13, we get 1 and a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 5998377.61538461
Subtracting 13 from 20 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

The final outcome is 5998377.61538461, with a leftover of 7e-09.