60!(15!)4\frac{60 !}{(15 !)^{4}}(15!)460!
60!4!(15!)4\frac{60 !}{4 !(15 !)^{4}}4!(15!)460!
60!4(15!)4\frac{60 !}{4(15 !)^{4}}4(15!)460!
60!4!(15!)\frac{60 !}{4 !(15 !)}4!(15!)60!