A factory invested in rebuilding the factory building, and actually used 910,000 yuan, which was actually less than the plan (2/15). How much is the planned investment?
某工厂投资改建厂房，实际用了91万元，实际比计划节约(2/15)，问计划投资多少万元？
<gadget id="calculator">2 / 15</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">1 - (2/15)</gadget>
<output>13/15 = around 0.866667</output>

<gadget id="calculator">91 / (13/15)</gadget>
<output>105</output>

<result>105</result>