The list is infinite. The first 25 multiples are:
60
120
180
240
300
360
420
480
540
600
660
720
780
840
900
960
1020
1080
1140
1200
1260
1320
1380
1440
1500
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60,120,180,240,300,360,420,480,540,600
It is: 60
60 and its multiples
They are multiples of 60.
Nope, neither are multiples of 9.