756645 ÷ 45 
Our goal is to divide 756645 by 45.

Going ahead to step 1:
The number 45 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (5) from the dividend, attach it to 7 and continue: 75 / 45

Advancing to step 2:
When dividing 75 by 45, we get 1 with a remainder of 30.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 30 after subtracting 45 from 75.
Fetch the next digit (6) from the dividend, attach it to 30 and continue: 306 / 45

Going ahead to step 3:
45 goes into 306 6 times with a remainder of 36.
Put 6 as the next digit of the answer. 
Result so far: 16.0
If we take 270 away from 306, we end up with 36.
Include the next digit (6) from the dividend after 36, then repeat: 366 / 45

Advancing to step 4:
When dividing 366 by 45, we get 8 with a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 168.0
If we subtract 360 from 366, we get 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 45

Going ahead to step 5:
45 can be fit into 64 1 times, resulting in a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 1681.0
If we subtract 45 from 64, we get 19.
Fetch the next digit (5) from the dividend, attach it to 19 and continue: 195 / 45

Step 6:
45 goes into 195 4 times with a remainder of 15.
Write down 4 as next digit of the result. 
Result so far: 16814.0
If we take 180 away from 195, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 7:
150 divided by 45 is 3 with a remainder of 15.
The next digit of our result is 3. 
Result so far: 16814.3
The remainder is 15 after subtracting 135 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 8:
150 divided by 45 is 3 with a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 16814.33
Subtract 135 from 150 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final outcome is 16814.33, with a leftover of 0.015.