计算:
(1)$(-85)×(-25)×(-4)$;
(2)$(-8)×(-\frac{4}{3})×(-1.25)×\frac{5}{4}$;
(3)$(-125)×(-25)×4×0×(-8)$;
(4)$(\frac{7}{9}-\frac{5}{6}+\frac{3}{4}-\frac{7}{18})×36$;
(5)$(\frac{1}{6}-\frac{3}{4}+\frac{1}{12})×(-48)$;
(6)$(-5)×(-7)+5×(-6)$;
(7)$4×(-3\frac{6}{7})-3×(-3\frac{6}{7})-6×3\frac{6}{7}$;
(8)$99\frac{24}{25}×(-25)$;
(9)$(-1\frac{5}{17})×(-3\frac{1}{8})×(+\frac{8}{15})×(+3\frac{7}{9})$;
(10)$(1+\frac{1}{2})×(1+\frac{1}{4})×(1+\frac{1}{6})×\dots×(1+\frac{1}{20})×(1-\frac{1}{3})×(1-\frac{1}{5})×(1-\frac{1}{7})×\dots×(1-\frac{1}{21})$。
答案:(1)-8500
(2)$-\frac{50}{3}$
(3)0
(4)11
(5)24
(6)5
(7)-27
(8)-2499
(9)$\frac{220}{27}$
(10)1