In the parking lot, there are 46 cars with odd number plates and 15 more cars with even number plates than odd number cars. How many cars are there with even number plates?
停车场上，车牌号是单数的有46辆，车牌号是双数的车比单号的车的3倍多15辆，车牌号是双数的车有多少辆？
<gadget id="calculator">46 * 3</gadget>
<output>138</output>

<gadget id="calculator">138 + 15</gadget>
<output>153</output>

<result>153</result>