"238乘47的验算"...238乘47的验算
"28x38+72x38的验算"...28x38+72x38的验算
"28x45的验算"...28x45的验算
"328乘25的验算"...328乘25的验算
"38乘以24 的验算"...38乘以24 的验算
"208x34验算"...208x34验算
"238x47验算"...238x47验算
"243x38的验算"...243x38的验算
"28乘19的验算"...28乘19的验算
"37乘28的验算"...37乘28的验算