In a certain granary, 74 tons less than 2/5 of the total stored grain was first transported away, and then 20 tons were transported in. At this time, the stored grain increased by 15%. How many tons of grain did the grain depot originally store?
某粮仓，先运走存粮总数的(2/5)少74吨，然后又运进20吨，这时存粮比原来增加15%．粮库原来存粮多少吨？
<gadget id="calculator">74 + 20</gadget>
<output>94</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">(3/20) - 1</gadget>
<output>-17/20 = around -0.85</output>

<gadget id="calculator">(2/5) + 1 + (-17/20)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">94 / (11/20)</gadget>
<output>1_880/11 = around 170.909091</output>

<result>1_880/11 = around 170.909091</result>