基本运算

练习内容

// 基本数学运算\nconst a = 10;\nconst b = 3;\n\nconsole.log(`加法: ${a} + ${b} = ${a + b}`);\nconsole.log(`减法: ${a} - ${b} = ${a - b}`);\nconsole.log(`乘法: ${a} * ${b} = ${a * b}`);\nconsole.log(`除法: ${a} / ${