To build a railway, if an average of 5 sleepers are laid every 3 meters, a total of 5000 sleepers will be used. If 6 sleepers are laid every 4 meters on average, how many sleepers will be used in total?
修一条铁路，如果平均每3米铺5根枕木，共要用5000根枕木．如果平均每4米铺6根枕木，共要用多少根枕木．
<gadget id="calculator">5_000 / 5</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) * 6</gadget>
<output>4_500</output>

<result>4_500</result>