Question

A:(25×4)×3,при a=48000;54000​

Answer 1

a÷(25×4)×3

Ecли а=48000;48000÷(25×4)×3=1440

а=54000;54000÷(25×4)×3=1620

Answer 2

It seems like you're looking for the result of the expression A: $(25 \times 4) \times 3$, when $a$ is either 48000 or 54000. However, it appears there's some confusion with the notation. The expression $A: \, (25 \times 4) \times 3$ already gives you a fixed numerical result, which is $25 \times 4 \times 3 = 300$.

If you have values for $a$ and are looking for some kind of operation involving those values, please provide more context or clarify the notation so I can assist you better.