663551 ÷ 7 
We want to figure out the number of times 663551 can be divided by 7.

Going ahead to step 1:
If we divide 6 by 7, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 7

Going ahead to step 2:
The number 7 fits into 66 9 times, leaving a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 9.0
Deduct 63 from 66 and we're left with 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 7

Moving on to step 3:
7 can be fit into 33 4 times, resulting in a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 94.0
Subtract 28 from 33 to get 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 7

Moving on to step 4:
7 can be fit into 55 7 times, resulting in a remainder of 6.
Write down 7 as next digit of the result. 
Result so far: 947.0
Deduct 49 from 55 and we're left with 6.
Append the next digit (5) from the dividend to 6 and continue with: 65 / 7

Moving on to step 5:
65 divided by 7 is 9 with a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 9479.0
If we subtract 63 from 65, we get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 7

Going ahead to step 6:
When dividing 21 by 7, we get 3 with a remainder of 0.
The next digit of our result is 3. 
Result so far: 94793.0
Subtracting 21 from 21 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:
If we divide 0 by 7, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 94793.0
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.

Moving on to step 8:
If we divide 0 by 7, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 94793.0
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.

Our division results in 94793.0 with a remaining 0.0.