The distance between Xiaoming’s home and the Cultural Palace is 3.5km. Xiaoming starts from the Cultural Palace by bicycle after class and walks 0.15km per minute. After 2 minutes, his mother picks him up on an electric bike from home and travels 0.65km per minute. people meet.
小明家与文化宫相距3.5km，小明上完课后从文化宫骑自行车出发，每分钟走0.15km.2分钟后，妈妈从家里骑电动车去接他，每分钟行0.65km，再经过几分钟两人相遇．
<gadget id="calculator">0.15 * 2</gadget>
<output>0.3</output>

<gadget id="calculator">3.5 - 0.3</gadget>
<output>3.2</output>

<gadget id="calculator">0.15 + 0.65</gadget>
<output>0.8</output>

<gadget id="calculator">3.2 / 0.8</gadget>
<output>4</output>

<result>4</result>