Duration_2_35
Duration_3_41
SimpsonDoesMath. Duration_4_41
SimpsonDoesMath. Duration_9_04
Duration_18_01
Duration_16_45
Solution by Michael Mayfield. Duration_1_32
SimpsonDoesMath. Duration_5_50
Duration_3_01
Duration_6_28
Solution by Gavin Money. Duration_3_33
Duration_6_04
Duration_2_19
Duration_14_15