3.27×4 +3.27×5.7 （1.2+ 1.8）×

4.51025－768÷32 0.25×80－0.45÷0.9

1025－768÷32 0.25*2.69*4 2348+275*16 2/9*15/8-1/12*9/5

2.4+2.4*(5.375-

3.375) 645-45*12 0.15+1.2/0.24-0.45 3.75-(2.35+0.25/1.25) 76*1/4+23*25/100+0.25 10-2.87-7.13 0.96+9.6*9.9 7.5-5.7*1/3

12.37-3.25-6.75 16*6.8+2.2*16+16 401*19+284 58.7-16.65/3.7

0.4*4.7*2.5+(2.3+5.3) 9.31-1.125-7.875 640+128*45

8.2*1.6-0.336/4.2 400*(0.62+0.08)