P = 1 + `9/45` + `9/105` + `9/189` + ... + `9/2997`
P = 1 + `3/15` + `3/35` + `3/55` + .... + `3/9999`
P = `3/1` x 3 + `3/3` x 5 + `3/5` x 7 + `3/11` x 5 + ... + `3/99` x 101
P = `3/2` x ( `2/1` x 3 + `2/3` x 5 + `2/5` x 7 + `2/11` x 5 + ... + `2/99` x 101 )
P = `3/2` x ( 1 - `1/3` + `1/3` - `1/5` + `1/5` - `1/7` + `1/7` - `1/11` + .... + `1/99` - `1/101` )
P = `3/2` x ( 1 - `1/101` )
P = `3/2` x `100/101`
P = `150/101`
`#cactus`