We divide 978390 by 7
We want to divide 978390 by 7.

Going ahead to step 1:
7 can be fit into 9 1 times, resulting in a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 7 from 9, we get 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 7

Moving on to step 2:
If we divide 27 by 7, we get 3 and a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Subtract 21 from 27 to get 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 7

Let's proceed to step 3:
When dividing 68 by 7, we get 9 with a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 139.0
If we subtract 63 from 68, we get 5.
Include the next digit (3) from the dividend after 5, then repeat: 53 / 7

Let's proceed to step 4:
53 divided by 7 is 7 with a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 1397.0
If we subtract 49 from 53, we get 4.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 7

Step 5:
The number 7 fits into 49 7 times, leaving a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 13977.0
The remainder is 0 after subtracting 49 from 49.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 7

Going ahead to step 6:
The number 7 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 139770.0
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.

Moving on to step 7:
When dividing 0 by 7, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 139770.0
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.

Moving on to step 8:
When dividing 0 by 7, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 139770.0
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.

After the division, we end up with 139770.0 and a remainder of 0.0.