`A = 8/1.5 + 8/5.9 + 8/9.13 + .... + 8/101.105`
`A = ( 4/1.5 + 4/5.9 + 4/9.13 + ... + 4/101.105 ) . 2`
`A = ( 1/1 - 1/5 + 1/5 - 1/9 + ... + 1/101 - 1/105 ) . 2`
`A = ( 1/1 - 1/105 ) . 2`
`A = 104/105 . 2`
`A = 208/105`
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`A = 4.2/1.5 + 4.2/5.9 + 4.2/9.13 + .... + 4.2/101 . 105`
`A = ( 4/1.5 + 4/5.9 + 4/9.13 + ..... + 4/101.105 ) . 2`
`A = ( 1/1 - 1/5 + 1/5 - 1/9 + 1/9 - 1/13 + ... + 1/101 - 1/105 ) .2`
`A = ( 1/1 - 1/105 ) . 2`
`A = 104/105 . 2`
`A = 208/105`
