We're dividing 771580 by 45 
Our goal is to divide 771580 by 45.

Advancing to step 1:
45 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 45

Moving on to step 2:
If we divide 77 by 45, we get 1 and a remainder of 32.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 32 after subtracting 45 from 77.
Fetch the next digit (1) from the dividend, attach it to 32 and continue: 321 / 45

Going ahead to step 3:
45 goes into 321 7 times with a remainder of 6.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
If we subtract 315 from 321, we get 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 45

Moving on to step 4:
If we divide 65 by 45, we get 1 and a remainder of 20.
Write down 1 as next digit of the result. 
Result so far: 171.0
If we take 45 away from 65, we end up with 20.
Fetch the next digit (8) from the dividend, attach it to 20 and continue: 208 / 45

Advancing to step 5:
The number 45 fits into 208 4 times, leaving a remainder of 28.
Write down 4 as next digit of the result. 
Result so far: 1714.0
Deduct 180 from 208 and we're left with 28.
Bring next digit (0) of the dividend behind the 28 and repeat the process: 280 / 45

Going ahead to step 6:
The number 45 fits into 280 6 times, leaving a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 17146.0
The remainder is 10 after subtracting 270 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 7:
100 divided by 45 is 2 with a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 17146.2
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
The number 45 fits into 100 2 times, leaving a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 17146.22
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 17146.22 with a remainder of 0.01.