The bread produced by a food processing factory is distributed by three groups of people. The first group delivers 28% of all bread, the second group delivers 30% of all bread, and the third group delivers 63 boxes. How many boxes does the food processing factory produce every day? bread?
某食品加工厂每天生产的面包由三组人分送，第一组运送全部面包的28%，第二组运送全部面包的30%，第三组运送了63箱，食品加工厂每天生产多少箱面包？
<gadget id="calculator">28 / 100</gadget>
<output>7/25 = around 0.28</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (7/25) - (3/10)</gadget>
<output>21/50 = around 0.42</output>

<gadget id="calculator">63 / (21/50)</gadget>
<output>150</output>

<result>150</result>