Jumlah tak hingga 64+8+1+1 per 8 adalah?

a= 64
[tex]r = \frac{8}{64 } = \frac{1}{8} [/tex]
[tex]s \infty = \frac{a}{1 - r} \\ \frac{64}{1 - \frac{1}{8} } \\ \frac{64}{ \frac{8}{8} - \frac{1}{8} } \\ \frac{64}{ \frac{7}{8} } \\ 64 \times \frac{8}{7} = 73.14\\ [/tex]