A railway is paved with 4 sleepers every 3 meters, and a total of 4000 sleepers are used. If the pavement is changed to 5 sleepers every 4 meters, how many sleepers will be used in total?
一条铁路，每3米铺4根枕木，共用4000根，如果改铺每4米用5根枕木，一共要用多少根枕木．
<gadget id="calculator">4_000 / 4</gadget>
<output>1_000</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1_000 * (3/4) * 5</gadget>
<output>3_750</output>

<result>3_750</result>