278489 ÷ 39 
Let's see how many times 39 fits into 278489.

Going ahead to step 1:
When dividing 2 by 39, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 39

On to step 2:
39 can be fit into 27 0 times, resulting in a remainder of 27.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 27 and we're left with 27.
Grab the next digit (8) from the dividend, add it to 27, then carry on: 278 / 39

Step 3:
278 divided by 39 is 7 with a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 273 from 278, we get 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 39

Advancing to step 4:
The number 39 fits into 54 1 times, leaving a remainder of 15.
The next digit of our result is 1. 
Result so far: 71.0
Deduct 39 from 54 and we're left with 15.
Append the next digit (8) from the dividend to 15 and continue with: 158 / 39

On to step 5:
If we divide 158 by 39, we get 4 and a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 714.0
Deduct 156 from 158 and we're left with 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 39

On to step 6:
If we divide 29 by 39, we get 0 and a remainder of 29.
The number 0 becomes the next digit in our result. 
Result so far: 7140.0
If we take 0 away from 29, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 7:
39 goes into 290 7 times with a remainder of 17.
Record the quotient 7 as the next digit in the result. 
Result so far: 7140.7
Subtracting 273 from 290 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 8:
39 goes into 170 4 times with a remainder of 14.
Use 4 as the next digit of our solution. 
Result so far: 7140.74
Subtracting 156 from 170 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 9:
When dividing 140 by 39, we get 3 with a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 7140.743
Subtract 117 from 140 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 10:
230 divided by 39 is 5 with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 7140.7435
Subtract 195 from 230 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 11:
If we divide 350 by 39, we get 8 and a remainder of 38.
Write down 8 as next digit of the result. 
Result so far: 7140.74358
If we take 312 away from 350, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 12:
When dividing 380 by 39, we get 9 with a remainder of 29.
Put 9 as the next digit of the answer. 
Result so far: 7140.743589
Deduct 351 from 380 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 13:
39 goes into 290 7 times with a remainder of 17.
Write down 7 as next digit of the result. 
Result so far: 7140.7435897
Subtracting 273 from 290 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 14:
The number 39 fits into 170 4 times, leaving a remainder of 14.
The number 4 becomes the next digit in our result. 
Result so far: 7140.74358974
Subtract 156 from 170 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final outcome is 7140.74358974, with a leftover of 1.4e-08.