Kak bisa tolong bantuin no 14 sama 15

14.phixrxrxt+phixrxrxt
=314/100x10x10x14+314/100x5x5x7
=314x14+314x4x7
=4396+8792
=13188
15.pxlxt+phixrxrxt
=5x6x7+314/100x1,75x1,75x3
=210+314/100x3,0652x3
=210+314/100x91875/100000
=210+314x91875/1000
=28848,75
Maaf kalo salah
☺️