new type of family car, with the original speed of 60 kilometers per hour, consumes 6 liters of fuel. After technical improvement, the speed per hour has increased by 20%, but the fuel consumption has dropped by 10%. How many liters of fuel does this car consume per hour now?
一种新型家用轿车，原来的时速的每小时60千米，需耗油6升．经过技术改进，现在的时速提高了20%，但耗油却下降了10%，这种轿车现在每小时耗油多少升？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">7.2 * (9/10)</gadget>
<output>6.48</output>

<result>6.48</result>