There is a granary. First, 33 tons of grain less than the total amount (2/5) of the stored grain are transported away, and then 143 tons of grain are transported in. At this time, the grain stored in the granary has increased by 15% compared to the original one. How many tons of grain was originally stored in the granary?
有一座粮仓，先把比存粮总数的(2/5)少33吨的粮食运走，然后又运进143吨粮食，此时粮仓存粮比原来增加了15%，粮仓原来存粮多少吨？
<gadget id="calculator">176 / 0.55</gadget>
<output>320</output>

<result>320</result>