A sika deer is 1.56 meters tall, and a giraffe is 0.8 meters less than 4.2 times the height of a sika deer. How tall is this giraffe?
一只梅花鹿身高1.56米，一只长颈鹿的身高比梅花鹿身高的4.2倍少0.8米．这只长颈鹿身高多少米？
<gadget id="calculator">1.56 * 4.2</gadget>
<output>6.552</output>

<gadget id="calculator">6.552 - 0.8</gadget>
<output>5.752</output>

<result>5.752</result>