Z 3 4 10 July 8, 2019 16 32 64 128 3 4 z 100 3 4 z 1000 Z 2z 3 2z 4 10 3 4 z 10000 3 z 4 5z 1 10 3 z − 4 1 10 3 4 z 7 10 5 4 z 3 )=- 10 3 4 x 10 z metal Ile to 3 4 z 100 Ile to 3 4 z 10