8乘以6等于几啊

8乘以6等于几啊 几乘以几等于6 8乘以9等于几 6乘以几等于40 1005个8乘以9等于几 15乘以75分之8等于几 1/4乘以8等于几 22分之21乘以8等于几 3.14乘以6的平方等于几? 5乘以负6等于几,为什么 6乘以负9等于几 15乘以16等于几啊 1乘以2等于几啊 78乘以几等于45乘以几 几乘以几等于三分之二 几乘以几等于100 几乘以几等于28 几乘以几等于-1?