I must be mistaken then, I am sorry. I have therefore deleted my posts, However I still make the ROI out to be 6 months though.

If 1 Farm$hare = (0.00027478 LTC/day) see - http://ltcgear.com/ltc-payments/

Each Farm share pays equivalent of 63kHs.

Each ASIC share pays equivalent of 100kHs.

Then 1 ASIC share (0.00043 LTC/day) x 1600 = 0.688 LTC/day

Converted to Bitcoin - 0.688 LTC = 0.01104 BTC = $4.82 USD/day

$920.55 / $4.82/day = 191 days / 31 - 6.1 Months to ROI

Is my math wrong?