A small zebra is 1.83 meters tall, and a giraffe is twice as tall as it is 1.54 meters. How tall is a giraffe?
一只小斑马身高1.83米，长颈鹿比它高2倍还多1.54米，长颈鹿身高多少米？
<gadget id="calculator">1.83 * 2</gadget>
<output>3.66</output>

<gadget id="calculator">3.66 + 1.54</gadget>
<output>5.2</output>

<result>5.2</result>