When my mother comes home from get off work to cook, it takes 2 minutes to wash the rice, 20 minutes to cook the rice, 3 minutes to wash the vegetables, 2 minutes to chop the vegetables, and 10 minutes to stir-fry. If different pots and stoves are used for cooking and frying, how long will it take at least for mother to prepare all the meals?
妈妈下班回家做饭，淘米要2分钟，煮饭要20分钟，洗菜要3分钟，切菜要2分钟，炒菜要10分钟．如果煮饭和炒菜要用不同的锅和炉子，妈妈要将饭菜都做好，最少要用多少时间．
<gadget id="calculator">2 + 20</gadget>
<output>22</output>

<result>22</result>