Wang Hua practiced brush writing. He wrote 110 characters this morning and 140 in the afternoon. The number of calligraphy practiced by Wang Hua today is equivalent to yesterday's (5/6). How many characters did Wang Hua write yesterday?
王华练习写毛笔字，今天上午写了110个字，下午写了140个，王华今天练习写字的个数相当于昨天的(5/6)，王华昨天写了多少个字？
<gadget id="calculator">110 + 140</gadget>
<output>250</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">250 / (5/6)</gadget>
<output>300</output>

<result>300</result>