how calculate torque of compound gear train

hi

i have a simple gear train assambly.

gear 1 have 15 teeth

gear 2 have  30 teeth

gear 3 have 15 teeth

gear 4 have 30 teeth

gear 5 have 15 teeth

gear 6 have 45 teeth

input constant torque on gear 1 is = 10 in lb

simulation time is      2 sec

which type of motion polt give me output torque of gear train or on last driven gear after 2 sec ?

or how i calculate torque on last driven gear with different motion plots ?

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