(150.000000+150/150.000000)/2=75.500000
(75.500000+150/75.500000)/2=38.743377
(38.743377+150/38.743377)/2=21.307503
(21.307503+150/21.307503)/2=14.173639
(14.173639+150/14.173639)/2=12.378333
(12.378333+150/12.378333)/2=12.248141
(12.248141+150/12.248141)/2=12.247449