64415509 ÷ 45 
Let's see how many times 45 fits into 64415509.

On to step 1:
When dividing 6 by 45, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 45

On to step 2:
The number 45 fits into 64 1 times, leaving a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 45 from 64 and we're left with 19.
Include the next digit (4) from the dividend after 19, then repeat: 194 / 45

Advancing to step 3:
If we divide 194 by 45, we get 4 and a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtract 180 from 194 to get 14.
Fetch the next digit (1) from the dividend, attach it to 14 and continue: 141 / 45

Moving on to step 4:
The number 45 fits into 141 3 times, leaving a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 143.0
The remainder is 6 after subtracting 135 from 141.
Include the next digit (5) from the dividend after 6, then repeat: 65 / 45

Let's proceed to step 5:
65 divided by 45 is 1 with a remainder of 20.
The next digit of our result is 1. 
Result so far: 1431.0
Deduct 45 from 65 and we're left with 20.
Include the next digit (5) from the dividend after 20, then repeat: 205 / 45

On to step 6:
45 can be fit into 205 4 times, resulting in a remainder of 25.
Use 4 as the next digit of our solution. 
Result so far: 14314.0
Deduct 180 from 205 and we're left with 25.
Bring next digit (0) of the dividend behind the 25 and repeat the process: 250 / 45

Let's proceed to step 7:
If we divide 250 by 45, we get 5 and a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 143145.0
If we subtract 225 from 250, we get 25.
Take the next digit (9) from the dividend and append it to 25, then repeat: 259 / 45

Going ahead to step 8:
The number 45 fits into 259 5 times, leaving a remainder of 34.
Use 5 as the next digit of our solution. 
Result so far: 1431455.0
Deduct 225 from 259 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 9:
45 goes into 340 7 times with a remainder of 25.
Put 7 as the next digit of the answer. 
Result so far: 1431455.7
Subtracting 315 from 340 leaves us 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.

Going ahead to step 10:
The number 45 fits into 250 5 times, leaving a remainder of 25.
The next digit of our result is 5. 
Result so far: 1431455.75
The remainder is 25 after subtracting 225 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 11:
45 goes into 250 5 times with a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 1431455.755
Subtract 225 from 250 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.

Our division results in 1431455.755 with a remaining 0.0025.