We divide 623987 by 10
Let's see how many times 10 fits into 623987.

Step 1:
10 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 10

On to step 2:
If we divide 62 by 10, we get 6 and a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Deduct 60 from 62 and we're left with 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 10

Advancing to step 3:
10 goes into 23 2 times with a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 62.0
If we subtract 20 from 23, we get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 10

On to step 4:
10 goes into 39 3 times with a remainder of 9.
The next digit of our result is 3. 
Result so far: 623.0
Subtract 30 from 39 to get 9.
Fetch the next digit (8) from the dividend, attach it to 9 and continue: 98 / 10

On to step 5:
If we divide 98 by 10, we get 9 and a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 6239.0
Subtract 90 from 98 to get 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 10

Step 6:
10 can be fit into 87 8 times, resulting in a remainder of 7.
Record the quotient 8 as the next digit in the result. 
Result so far: 62398.0
If we subtract 80 from 87, we get 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 7:
70 divided by 10 is 7 with a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 62398.7
If we take 70 away from 70, 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.

Step 8:
10 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 62398.7
If we subtract 0 from 0, we 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.

Going ahead to step 9:
If we divide 0 by 10, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 62398.7
If we subtract 0 from 0, we 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.

The final outcome is 62398.7, with a leftover of 0.0.