780409 divided by 45 
We want to figure out the number of times 780409 can be divided by 45.

Moving on to step 1:
The number 45 fits into 7 0 times, leaving a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 45

Step 2:
45 can be fit into 78 1 times, resulting in a remainder of 33.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 45 from 78 and we're left with 33.
Take the next digit (0) from the dividend and append it to 33, then repeat: 330 / 45

Going ahead to step 3:
330 divided by 45 is 7 with a remainder of 15.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
If we subtract 315 from 330, we get 15.
Bring next digit (4) of the dividend behind the 15 and repeat the process: 154 / 45

Moving on to step 4:
45 goes into 154 3 times with a remainder of 19.
Write down 3 as next digit of the result. 
Result so far: 173.0
Subtracting 135 from 154 leaves us with 19.
Grab the next digit (0) from the dividend, add it to 19, then carry on: 190 / 45

Step 5:
45 goes into 190 4 times with a remainder of 10.
Use 4 as the next digit of our solution. 
Result so far: 1734.0
The remainder is 10 after subtracting 180 from 190.
Fetch the next digit (9) from the dividend, attach it to 10 and continue: 109 / 45

Moving on to step 6:
45 goes into 109 2 times with a remainder of 19.
Write down 2 as next digit of the result. 
Result so far: 17342.0
Subtract 90 from 109 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 7:
45 goes into 190 4 times with a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 17342.4
Deduct 180 from 190 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.

Going ahead to step 8:
The number 45 fits into 100 2 times, leaving a remainder of 10.
The next digit of our result is 2. 
Result so far: 17342.42
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.

Going ahead to step 9:
45 goes into 100 2 times with a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 17342.422
The remainder is 10 after subtracting 90 from 100.
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 outcome is 17342.422, with a leftover of 0.001.