A cyclist rides a bicycle 78 kilometers a day for training, how many kilometers does he have to ride in a month (31 days)?
一位自行车运动员每天训练要骑自行车78千米，一个月(31天)要骑多少千米？
<gadget id="calculator">78 * 31</gadget>
<output>2_418</output>

<result>2_418</result>