1-- 41.06-19.72-20.287-3+ 8+2-11+7+3 700÷14÷518.6÷2.5÷0.4 1.06×2.5×4
10-÷×1
325×0.36+6.75×36
5.6×0.375+×5.4-0.375×0.9
5.6x+4x=17.28
x+=