The total number of multiples is infinite. Here are the first 10:
221, 442, 663, 884, 1105, 1326, 1547, 1768, 1989, 2210 . . .
33, 66, 99, 132, 155, 188, 221
There is an infinite number of common multiples for 13 and 17. A common multiple of any two or more numbers is any number into which each of two or more numbers can be divided evenly (zero remainder). However, the least or lowest common multiple (LCM) of 13 and 17 is 221.
1, 13, 17, 221.
13
221
1, 13, 17, 221.
221, 442, 663, 884, 1105.
The first ten positive integer multiples of 221 are: 1 x 221 = 221 2 x 221 = 442 3 x 221 = 663 4 x 221 = 884 5 x 221 = 1105 6 x 221 = 1326 7 x 221 = 1547 8 x 221 = 1768 9 x 221 = 1989 10 x 221 = 2210
221, 442, 663
The lowest common multiple of 13 and 17 is 221
208, 221, 234, 247.
33, 66, 99, 132, 155, 188, 221
That's an infinite number. 221, 442 and 663 are some of them.
Multiples of 1105
Yes 221/3 = 73.66666666666667 However 3 will not go into 221 an exact number of times.
102, 119, 136, 153, 170, 187, 204, 221, 238, 255, 272, 289, . . .
They are: 721, 721*2, 721*3, 721*4 and 721*5. You seem to be unaware of the fact that you could have obtained the answer much more easily and quickly by using the calculator that comes as part of your computer.