读黄土高原资料，完成下列问题。
物质
a
b
c
d
反应前质（g）
10
2
反应后质（g）
待测
21
— Would you like some coffee?— No, thanks. I drink coffee. Coffee is bad for my stomach.
0.45×10=____ 125×8=____ 6×15=____ 23×2=____
0.45×100=____ 12.5×8=____ 6×1.5= ____ 2.3×2=____
0.45×1000=____ 1.25×8=____ 6×0.15=____ 0.23×2=____
