Xiao Ming's eraser is 5 cm long, Xiao Fang's eraser is 55 mm long, whose eraser is longer? How long?
小明的橡皮长5厘米，小芳的橡皮长55毫米，谁的橡皮长？长多少？
<gadget id="calculator">5 * 10</gadget>
<output>50</output>

<gadget id="calculator">55 - 50</gadget>
<output>5</output>

<result>5</result>