2 people bought 200 lottery tickets in total, and 4 of them won the prize. What is the winning rate?
2人共买了200张彩票，有4张中奖，中奖率是多少
<gadget id="calculator">4 / 200</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(1/50) * 1</gadget>
<output>1/50 = around 0.02</output>

<result>1/50 = around 0.02</result>