tolong bantu saya kk cara kerja samanya (no.25)

e. 73 1/8

semoga membantu :)

64 + 8 + 1 + 1/8 + ....
a = 64, r = 8/64 = 1/8
S~ = a/(1 - r) = 64/(1 - 1/8) = 64/(7/8) = 64 . 8/7 = 512/7 = 73 1/7