Xiao Wang, Xiao Li and Xiao Zhang set off from A to B at the same time. After (4/5) hours, Xiao Wang still has (1/3) the whole distance from B, and Xiao Li still has the whole distance from B ( 2/5), Xiao Zhang still has the whole journey from B (4/9), who is the fastest? Why?
小王、小李和小张同时从A地出发去B地，(4/5)小时后，小王离B地还有全程的(1/3)，小李离B地还有全程的(2/5)，小张离B地还有全程的(4/9)，谁的速度最快？为什么？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>