The People's Market bought a batch of teacups at a price of 13 yuan each and sold them at a price of 14.8 yuan each. When there are only 5 teacups left, a profit of 88 yuan will be obtained in addition to the cost of purchasing these teacups. How many tea cups are there in this batch?
人民商场以每只13元的价格购进一批茶杯，以每只14.8元的价格卖出．卖到还剩下5只时，除去购进这批茶杯的成本外，还获得88元利润．这批茶杯有多少只．
<gadget id="calculator">14.8 * 5</gadget>
<output>74</output>

<gadget id="calculator">74 + 88</gadget>
<output>162</output>

<gadget id="calculator">14.8 - 13</gadget>
<output>1.8</output>

<gadget id="calculator">162 / 1.8</gadget>
<output>90</output>

<result>90</result>