We look at the division of 770434 by 45 
Let's see how many times 45 fits into 770434.

Advancing to step 1:
The number 45 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 45

On to step 2:
45 can be fit into 77 1 times, resulting in a remainder of 32.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 45 away from 77, we end up with 32.
Bring next digit (0) of the dividend behind the 32 and repeat the process: 320 / 45

Going ahead to step 3:
320 divided by 45 is 7 with a remainder of 5.
Put 7 as the next digit of the answer. 
Result so far: 17.0
If we subtract 315 from 320, we get 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 45

Let's proceed to step 4:
If we divide 54 by 45, we get 1 and a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 171.0
Subtracting 45 from 54 leaves us with 9.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 45

Let's proceed to step 5:
When dividing 93 by 45, we get 2 with a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 1712.0
The remainder is 3 after subtracting 90 from 93.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 45

Let's proceed to step 6:
45 can be fit into 34 0 times, resulting in a remainder of 34.
Put 0 as the next digit of the answer. 
Result so far: 17120.0
If we subtract 0 from 34, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 7:
45 can be fit into 340 7 times, resulting in a remainder of 25.
Put 7 as the next digit of the answer. 
Result so far: 17120.7
If we subtract 315 from 340, 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.

Moving on to step 8:
When dividing 250 by 45, we get 5 with a remainder of 25.
The next digit of our result is 5. 
Result so far: 17120.75
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.

Advancing to step 9:
If we divide 250 by 45, we get 5 and a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 17120.755
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.

The final result is 17120.755 with a remainder of 0.0025.