77940487 ÷ 39 
Let's see how many times 39 fits into 77940487.

Advancing to step 1:
If we divide 7 by 39, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 39

Advancing to step 2:
The number 39 fits into 77 1 times, leaving a remainder of 38.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 39 from 77 and we're left with 38.
Include the next digit (9) from the dividend after 38, then repeat: 389 / 39

Advancing to step 3:
When dividing 389 by 39, we get 9 with a remainder of 38.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
Subtract 351 from 389 to get 38.
Take the next digit (4) from the dividend and append it to 38, then repeat: 384 / 39

Let's proceed to step 4:
When dividing 384 by 39, we get 9 with a remainder of 33.
Use 9 as the next digit of our solution. 
Result so far: 199.0
Subtracting 351 from 384 leaves us with 33.
Grab the next digit (0) from the dividend, add it to 33, then carry on: 330 / 39

On to step 5:
When dividing 330 by 39, we get 8 with a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 1998.0
Subtracting 312 from 330 leaves us with 18.
Append the next digit (4) from the dividend to 18 and continue with: 184 / 39

Moving on to step 6:
39 can be fit into 184 4 times, resulting in a remainder of 28.
The number 4 becomes the next digit in our result. 
Result so far: 19984.0
The remainder is 28 after subtracting 156 from 184.
Fetch the next digit (8) from the dividend, attach it to 28 and continue: 288 / 39

Going ahead to step 7:
288 divided by 39 is 7 with a remainder of 15.
Put 7 as the next digit of the answer. 
Result so far: 199847.0
If we subtract 273 from 288, we get 15.
Fetch the next digit (7) from the dividend, attach it to 15 and continue: 157 / 39

Let's proceed to step 8:
The number 39 fits into 157 4 times, leaving a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 1998474.0
Subtracting 156 from 157 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 9:
When dividing 10 by 39, we get 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 1998474.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 10:
39 can be fit into 100 2 times, resulting in a remainder of 22.
Record the quotient 2 as the next digit in the result. 
Result so far: 1998474.02
Subtract 78 from 100 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 11:
39 can be fit into 220 5 times, resulting in a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 1998474.025
If we subtract 195 from 220, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 12:
250 divided by 39 is 6 with a remainder of 16.
The number 6 becomes the next digit in our result. 
Result so far: 1998474.0256
Deduct 234 from 250 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 13:
The number 39 fits into 160 4 times, leaving a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 1998474.02564
Deduct 156 from 160 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 14:
40 divided by 39 is 1 with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 1998474.025641
Deduct 39 from 40 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 15:
When dividing 10 by 39, we get 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 1998474.025641
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 16:
The number 39 fits into 100 2 times, leaving a remainder of 22.
Record the quotient 2 as the next digit in the result. 
Result so far: 1998474.02564102
The remainder is 22 after subtracting 78 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The quotient of the division is 1998474.02564102, and the remainder is 2.2e-08.