39874 ÷ 1 
Our goal is to divide 39874 by 1.

On to step 1:
When dividing 3 by 1, we get 3 with a remainder of 0.
The next digit of our result is 3. 
Result so far: 3.0
Subtracting 3 from 3 leaves us with 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 1

Advancing to step 2:
9 divided by 1 is 9 with a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 39.0
Subtracting 9 from 9 leaves us with 0.
Append the next digit (8) from the dividend to 0 and continue with: 8 / 1

Going ahead to step 3:
When dividing 8 by 1, we get 8 with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 398.0
Subtract 8 from 8 to get 0.
Include the next digit (7) from the dividend after 0, then repeat: 7 / 1

Step 4:
7 divided by 1 is 7 with a remainder of 0.
Record the quotient 7 as the next digit in the result. 
Result so far: 3987.0
If we subtract 7 from 7, we get 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 1

On to step 5:
If we divide 4 by 1, we get 4 and a remainder of 0.
The next digit of our result is 4. 
Result so far: 39874.0
The remainder is 0 after subtracting 4 from 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 6:
The number 1 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 39874.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 7:
0 divided by 1 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 39874.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 39874.0 and a remainder of 0.0.