该表为“我国土地荒漠化发展情况”，读表回答
3.72+0.5=____
7﹣1.96=____
2.4×0.5=____
0.39÷1.3=____
21÷ 37 =____
0.2×0.1=____
3.7÷10%=____
1.3×1.25×8=____
9.2÷2.3=____
5﹣2 23 =____
地球上赤道的周长约为（ ）
—No, we still need to buy a map before we start the trip.
