A building is 6 stories high, and each floor has 16 steps. How many steps are there in total to the fourth floor?
一座楼高6层，每层有16个台阶，上到第四层，共有台阶多少个．
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">16 * 3</gadget>
<output>48</output>

<result>48</result>