据口诀四七二十八，写出两个乘法算式。:m0A7g2b1a(u
4@)z(q6w/g*S:T)\+u1x×6I3E7A1C9B8X;~(n0@3N8S0r＝7j9X7t1K1V:i-m:}4J6e.I或+a4Y'`9r7?8s6y.v(H3E+x×8H3Z9]4b3b'H7C(k,S-w*q9K＝7X2d8z4M+r2E)\5]+v3z5{.d:m0A7g2b1a(u