During the summer vacation, Wu Juan went back to the countryside with her father to visit her grandfather. The three-story house of her grandfather's house was really beautifully built. The height of the first floor is 3.5 meters, and the height of each other floor is 3.2 meters. How many meters is the building of Grandpa Wu Juan's house?
暑假期间，吴娟随爸爸回农村看望爷爷，爷爷家的三层搂房盖得真漂亮．一楼的层高是3.5米，其余每层的楼高都是3.2米．吴娟爷爷家的楼房高多少米？
<gadget id="calculator">3.2 * 2</gadget>
<output>6.4</output>

<gadget id="calculator">6.4 + 3.5</gadget>
<output>9.9</output>

<result>9.9</result>