510917 ÷ 39 
We want to figure out the number of times 510917 can be divided by 39.

Moving on to step 1:
If we divide 5 by 39, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 39

Going ahead to step 2:
39 goes into 51 1 times with a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 39 from 51, we get 12.
Grab the next digit (0) from the dividend, add it to 12, then carry on: 120 / 39

Advancing to step 3:
120 divided by 39 is 3 with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 13.0
Deduct 117 from 120 and we're left with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 39

Advancing to step 4:
When dividing 39 by 39, we get 1 with a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 131.0
The remainder is 0 after subtracting 39 from 39.
Bring next digit (1) of the dividend behind the 0 and repeat the process: 1 / 39

Advancing to step 5:
If we divide 1 by 39, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 1310.0
Subtract 0 from 1 to get 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 39

Step 6:
The number 39 fits into 17 0 times, leaving a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 13100.0
If we take 0 away from 17, we end up 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.

Step 7:
The number 39 fits into 170 4 times, leaving a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 13100.4
The remainder is 14 after subtracting 156 from 170.
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 8:
39 can be fit into 140 3 times, resulting in a remainder of 23.
Record the quotient 3 as the next digit in the result. 
Result so far: 13100.43
Subtracting 117 from 140 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Let's proceed to step 9:
39 goes into 230 5 times with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 13100.435
If we subtract 195 from 230, we 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.

Let's proceed to step 10:
39 goes into 350 8 times with a remainder of 38.
The next digit of our result is 8. 
Result so far: 13100.4358
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.

Moving on to step 11:
When dividing 380 by 39, we get 9 with a remainder of 29.
Use 9 as the next digit of our solution. 
Result so far: 13100.43589
Subtracting 351 from 380 leaves us 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.

Going ahead to step 12:
39 can be fit into 290 7 times, resulting in a remainder of 17.
Write down 7 as next digit of the result. 
Result so far: 13100.435897
Subtract 273 from 290 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 13:
When dividing 170 by 39, we get 4 with a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 13100.4358974
Deduct 156 from 170 and we're left 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.

Going ahead to step 14:
The number 39 fits into 140 3 times, leaving a remainder of 23.
The number 3 becomes the next digit in our result. 
Result so far: 13100.43589743
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.

After the division, we end up with 13100.43589743 and a remainder of 2.3e-08.