A TV tower is 450 meters high, which is 50 meters higher than a building. How many times the height of the TV tower is this building?
一座电视发射塔高450米，比一座楼房高50米，电视塔的高度是这座楼房的多少倍？
<gadget id="calculator">450 - 50</gadget>
<output>400</output>

<gadget id="calculator">450 / 400</gadget>
<output>9/8 = around 1.125</output>

<result>9/8 = around 1.125</result>