Let's divide 126504 by 7
We're looking to find how many times 7 goes into 126504.

Step 1:
The number 7 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 7

Let's proceed to step 2:
7 goes into 12 1 times with a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 7 away from 12, we end up with 5.
Take the next digit (6) from the dividend and append it to 5, then repeat: 56 / 7

Step 3:
56 divided by 7 is 8 with a remainder of 0.
The next digit of our result is 8. 
Result so far: 18.0
If we take 56 away from 56, we end up with 0.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 7

Step 4:
7 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 180.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (0) from the dividend and append it to 5, then repeat: 50 / 7

Step 5:
When dividing 50 by 7, we get 7 with a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 1807.0
Deduct 49 from 50 and we're left with 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 7

Step 6:
7 can be fit into 14 2 times, resulting in a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 18072.0
Subtract 14 from 14 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.

On to step 7:
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: 18072.0
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:
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: 18072.0
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.

The final outcome is 18072.0, with a leftover of 0.0.