Question

512-287+10×{15+2×3[105:3:5+(120-5×10)×10]×2}​

Answer 1

512-287+10*{15+2*3[105:3:5+(120-5*10)*10]*2}

512-287+10*{15+2*3[105:3:5+(120-50)*10]*2}

512-287+10*[15+2*3(105:3:5+70*10)*2]

513-287+10*[15+2*3(35:5+70*10)*2]

513-287+10*[15+2*3(7+70*10)*2]

513-287+10*[15+2*3(7+700)*2]

513-287+10*(15+2*707*2)

513-287+10*(15+1414*2)

513-287+10*(15+2828)

513-287+10*2843

513-287+28430

226+28430=28656

Cu drag!