Total cost for iphone + 12 month(rm98) plan is rm2834 correct?

Phone price 1888
Advance payment 150

Total upon registration : 2038
-----------------------------------------------------------------------------------
First month = 0 (-75 from advance payment)
Second month = 0 (-75 from advance payment)
Third to Tenth = 75 x 8 [(98-23) x 8] (23 from 10 month rm230 rebate)
Eleventh and Twelfth = 98 + 98
------------------------------------------------------------------------------------
Total will be 2038 + (75x8) + 98 + 98


=RM2834

How is my calculation? Correct?