19.8+1.7=21.5
21.5*1.4=30.1
19.8-1.7=18.1
18.1*2.2=39.82
39.82+30.1=69.92
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19.8+1.7=21.5
21.5*1.4=30.1
19.8-1.7=18.1
18.1*2.2=39.82
39.82+30.1=69.92