748644 ÷ 6 
We're looking to find how many times 6 goes into 748644.

Step 1:
When dividing 7 by 6, we get 1 with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 6 from 7 leaves us with 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 6

On to step 2:
14 divided by 6 is 2 with a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we take 12 away from 14, we end up with 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 6

Going ahead to step 3:
6 goes into 28 4 times with a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 124.0
Subtract 24 from 28 to get 4.
Append the next digit (6) from the dividend to 4 and continue with: 46 / 6

Step 4:
6 can be fit into 46 7 times, resulting in a remainder of 4.
The next digit of our result is 7. 
Result so far: 1247.0
Subtract 42 from 46 to get 4.
Include the next digit (4) from the dividend after 4, then repeat: 44 / 6

Advancing to step 5:
When dividing 44 by 6, we get 7 with a remainder of 2.
Record the quotient 7 as the next digit in the result. 
Result so far: 12477.0
If we take 42 away from 44, we end up with 2.
Take the next digit (4) from the dividend and append it to 2, then repeat: 24 / 6

Moving on to step 6:
6 goes into 24 4 times with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 124774.0
The remainder is 0 after subtracting 24 from 24.
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 6 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 124774.0
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.

Moving on to step 8:
When dividing 0 by 6, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 124774.0
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 124774.0, with a leftover of 0.0.