661388 ÷ 7 
Our goal is to divide 661388 by 7.

Let's proceed to step 1:
If we divide 6 by 7, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 7

Going ahead to step 2:
When dividing 66 by 7, we get 9 with a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtract 63 from 66 to get 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 7

Going ahead to step 3:
7 goes into 31 4 times with a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 94.0
If we subtract 28 from 31, we get 3.
Append the next digit (3) from the dividend to 3 and continue with: 33 / 7

Moving on to step 4:
If we divide 33 by 7, we get 4 and a remainder of 5.
Use 4 as the next digit of our solution. 
Result so far: 944.0
Subtracting 28 from 33 leaves us with 5.
Include the next digit (8) from the dividend after 5, then repeat: 58 / 7

Moving on to step 5:
7 can be fit into 58 8 times, resulting in a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 9448.0
Subtracting 56 from 58 leaves us with 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 7

On to step 6:
The number 7 fits into 28 4 times, leaving a remainder of 0.
The next digit of our result is 4. 
Result so far: 94484.0
The remainder is 0 after subtracting 28 from 28.
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:
If we divide 0 by 7, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 94484.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
When dividing 0 by 7, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 94484.0
The remainder is 0 after subtracting 0 from 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 94484.0 with a balance of 0.0.