(105×2)÷(15×2);`.T8e7T9b5n7P8];K5s2w9h
算式:提示4K,P+I+T.b8E(y3X3q8[0V,};y;`.T8e7T9b5n7P8];K5s2w9h
=2u*Q6t3k:E0k2@;`.T8e7T9b5n7P8];K5s2w9h