78439 divided by 31 
We want to divide 78439 by 31.

Let's proceed to step 1:
If we divide 7 by 31, we get 0 and a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 31

Let's proceed to step 2:
31 goes into 78 2 times with a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 62 from 78 to get 16.
Fetch the next digit (4) from the dividend, attach it to 16 and continue: 164 / 31

Step 3:
31 goes into 164 5 times with a remainder of 9.
Put 5 as the next digit of the answer. 
Result so far: 25.0
If we subtract 155 from 164, we get 9.
Take the next digit (3) from the dividend and append it to 9, then repeat: 93 / 31

Going ahead to step 4:
When dividing 93 by 31, we get 3 with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 253.0
The remainder is 0 after subtracting 93 from 93.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 31

Going ahead to step 5:
If we divide 9 by 31, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 2530.0
Subtracting 0 from 9 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 6:
31 goes into 90 2 times with a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 2530.2
If we subtract 62 from 90, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 7:
280 divided by 31 is 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 2530.29
Deduct 279 from 280 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.

On to step 8:
If we divide 10 by 31, we get 0 and a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 2530.29
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.

Step 9:
100 divided by 31 is 3 with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 2530.2903
If we take 93 away from 100, we end up 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.

On to step 10:
The number 31 fits into 70 2 times, leaving a remainder of 8.
The next digit of our result is 2. 
Result so far: 2530.29032
Deduct 62 from 70 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.

On to step 11:
The number 31 fits into 80 2 times, leaving a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 2530.290322
Subtract 62 from 80 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

After the division, we end up with 2530.290322 and a remainder of 1.8e-06.