"Global Link" mobile phone monthly rental fee is 30 yuan, call fee is 0.3 yuan per minute. If a person's monthly mobile phone bill does not exceed 60 yuan, how many minutes can he call at most per month?
"全球通"手机月租费30元，通话费0.3元/分．如果某人每月的手机费不会超过60元，那么他每月最多可以打电话多少分钟．
<gadget id="calculator">60 - 30</gadget>
<output>30</output>

<gadget id="calculator">30 / 0.3</gadget>
<output>100</output>

<result>100</result>