Uncle Wang originally weighed 90 kilograms. After insisting on physical exercise, I lost weight (5/12). How many kilograms does Uncle Wang weigh now?
王叔叔原来体重是90千克．坚持体育锻炼后，体重减轻了(5/12)，现在王叔叔体重是多少千克？
<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">1 - (5/12)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">90 * (7/12)</gadget>
<output>105/2 = around 52.5</output>

<result>105/2 = around 52.5</result>