1 goose can be exchanged for 8 kg of fish, 4 kg of fish can be exchanged for 50 eggs, and 10 eggs can be exchanged for 3 goose eggs. How many goose eggs can a goose exchange?
1只鹅可以换8千克鱼，而4千克鱼可以换50个鸡蛋，10个鸡蛋可以换3个鹅蛋．一只鹅可以换多少个鹅蛋？
<gadget id="calculator">8 / 4</gadget>
<output>2</output>

<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">50 * (1/5)</gadget>
<output>10</output>

<gadget id="calculator">10 * 3</gadget>
<output>30</output>

<result>30</result>