661423 divided by 7 
We're looking to find how many times 7 goes into 661423.

Step 1:
The number 7 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 7

Advancing to step 2:
66 divided by 7 is 9 with a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Deduct 63 from 66 and we're left with 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 7

Moving on to step 3:
If we divide 31 by 7, we get 4 and a remainder of 3.
The next digit of our result is 4. 
Result so far: 94.0
Deduct 28 from 31 and we're left with 3.
Bring next digit (4) of the dividend behind the 3 and repeat the process: 34 / 7

On to step 4:
The number 7 fits into 34 4 times, leaving a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 944.0
Deduct 28 from 34 and we're left with 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 7

Let's proceed to step 5:
The number 7 fits into 62 8 times, leaving a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 9448.0
If we subtract 56 from 62, we get 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 7

Moving on to step 6:
7 can be fit into 63 9 times, resulting in a remainder of 0.
Record the quotient 9 as the next digit in the result. 
Result so far: 94489.0
Subtracting 63 from 63 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.

Moving on to step 7:
7 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: 94489.0
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.

Step 8:
The number 7 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 94489.0
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.

Our division results in 94489.0 with a remaining 0.0.