Please help me understand how my professor solved this and plugged in the values

Problem 10: Given the diagram below (a) compute the output RMS voltage to the load if the following values are given. N, :=20, N,:=100, V :=100.0 . V (note V1 is an RMS values) (b) if the load resistor is Road := 1000. ks? (c) compute the power delivered to the load resistor., Primary Winding Secondary Winding Iron Coil A Coil B Core N 2 (a) V2 := V . = 500 V N1 N1 N2 V2 Load V 2 ( b ) 0.500 mA Rload Fluxe ( c ) Prms = V2 . 12=0.250 W