In 2012, a total of 30 songs entered the final of a certain song competition. If each song is about 4 minutes long, how many minutes will it take to finish singing these songs?
2012年某歌曲大奖赛共有30首歌曲进入决赛，如果每首歌曲的时长大约为4分钟，那么要演唱完这些歌曲共需要多少分钟？
<gadget id="calculator">4 * 30</gadget>
<output>120</output>

<result>120</result>