The kindergarten bought two kinds of toys. Among them, there are 50 bears and 100 rabbits. Each bear is 5 yuan, and each rabbit is 4.5 yuan. How much is it cheaper to buy a bear than to buy a rabbit?
幼儿园买来两种玩具，其中，小熊有50只，小兔有100只，小熊每个5元，小兔每个4.5元，买小熊比买小兔少花多少钱？
<gadget id="calculator">100 * 4.5</gadget>
<output>450</output>

<gadget id="calculator">50 * 5</gadget>
<output>250</output>

<gadget id="calculator">450 - 250</gadget>
<output>200</output>

<result>200</result>