Teacher Wang bought 3 teacups for 160 yuan, and the salesperson found 4 yuan. How much is each teacup?
王老师用160元买3个茶杯，营业员找了4元，每个茶杯多少元？
<gadget id="calculator">160 - 4</gadget>
<output>156</output>

<gadget id="calculator">156 / 3</gadget>
<output>52</output>

<result>52</result>