The combined weight of a panda and a zebra is 750 kg. It is known that the weight of a zebra is four times that of a panda. Find the weight of a panda?
一只熊猫和一只斑马的体重之和是750千克，已知一只斑马的体重是一只熊猫的4倍，求一只熊猫的体重？
<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<gadget id="calculator">750 / 5</gadget>
<output>150</output>

<result>150</result>