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ceiling($v/$p)=ceiling(10/3)=4 $p! = 3*2*1 = 6 ... #so... ceiling($v/$p)-1 + $p! = 3 + 6 = 9
ceiling($v/$p)=ceiling(36/10) = 4 $p! = 10! #so... ceiling($v/$p)-1 + p! = 3 + 10!