Xiaoli lives on the 7th floor and Xiaojun lives on the first floor. There are 18 steps between each floor. If Xiaojun goes to Xiaoli's house to play, how many steps will he have to walk in total?
小丽家住7楼，小军家住1楼，每层楼之间有18级台阶，如果小军去小丽家玩，一共要走多少级台阶？
<gadget id="calculator">7 - 1</gadget>
<output>6</output>

<gadget id="calculator">18 * 6</gadget>
<output>108</output>

<result>108</result>