398980 ÷ 10 
We want to figure out the number of times 398980 can be divided by 10.

Step 1:
10 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 10

Going ahead to step 2:
39 divided by 10 is 3 with a remainder of 9.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 30 from 39 and we're left with 9.
Bring next digit (8) of the dividend behind the 9 and repeat the process: 98 / 10

Advancing to step 3:
98 divided by 10 is 9 with a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 39.0
Subtract 90 from 98 to get 8.
Include the next digit (9) from the dividend after 8, then repeat: 89 / 10

Moving on to step 4:
89 divided by 10 is 8 with a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 398.0
Subtracting 80 from 89 leaves us with 9.
Fetch the next digit (8) from the dividend, attach it to 9 and continue: 98 / 10

Let's proceed to step 5:
The number 10 fits into 98 9 times, leaving a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 3989.0
Deduct 90 from 98 and we're left with 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 10

Step 6:
80 divided by 10 is 8 with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 39898.0
If we take 80 away from 80, 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.

Advancing to step 7:
0 divided by 10 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 39898.0
Deduct 0 from 0 and we're left 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.

Let's proceed to step 8:
10 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 39898.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 39898.0 with a balance of 0.0.