We look at the division of 773008 by 45 
Let's see how many times 45 fits into 773008.

On to step 1:
7 divided by 45 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 45

Step 2:
The number 45 fits into 77 1 times, leaving a remainder of 32.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 45 from 77 leaves us with 32.
Bring next digit (3) of the dividend behind the 32 and repeat the process: 323 / 45

Moving on to step 3:
The number 45 fits into 323 7 times, leaving a remainder of 8.
The next digit of our result is 7. 
Result so far: 17.0
Deduct 315 from 323 and we're left with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 45

Step 4:
When dividing 80 by 45, we get 1 with a remainder of 35.
Write down 1 as next digit of the result. 
Result so far: 171.0
Subtract 45 from 80 to get 35.
Append the next digit (0) from the dividend to 35 and continue with: 350 / 45

Going ahead to step 5:
45 goes into 350 7 times with a remainder of 35.
The next digit of our result is 7. 
Result so far: 1717.0
Deduct 315 from 350 and we're left with 35.
Append the next digit (8) from the dividend to 35 and continue with: 358 / 45

Moving on to step 6:
The number 45 fits into 358 7 times, leaving a remainder of 43.
Record the quotient 7 as the next digit in the result. 
Result so far: 17177.0
If we subtract 315 from 358, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Moving on to step 7:
If we divide 430 by 45, we get 9 and a remainder of 25.
Put 9 as the next digit of the answer. 
Result so far: 17177.9
Subtract 405 from 430 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 8:
If we divide 250 by 45, we get 5 and a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 17177.95
Deduct 225 from 250 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 9:
250 divided by 45 is 5 with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 17177.955
If we subtract 225 from 250, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

After the division, we end up with 17177.955 and a remainder of 0.0025.