You'd start with 1 at 12:00
Then at 12:30 that would divide into 2
At 1:00 those 2 would divide into 2 more and you'd have 4
At 1:30 the four would divide into 2 as well, giving you 8
At 2:00 The 8 would divide into 2 once again, and you'd have (end) with 16