(3 x 10^2) + (2 x 10) + 4 =	Choose the correct choice from the following
A) 302400 B) 32400 C) 30240 D) 3240 E) 324
When you multiply a number by 10 you just add a zero   =&gt; 3 x 10^2 =&gt; add 2 zeros =&gt; 3 x 10^2 = 300   =&gt;2 x 10 = 20   =&gt; 4 = 4   =&gt;3 x 10^2 + 2 x 10 + 4 = 300 + 20 + 4= 
<gadget id="calculator">300 + 20 + 4</gadget>
<output>324</output>
324=&gt; answer is 324 ( 324)
<result>E</result>
(3 x 10^2) + (2 x 10) + 4 =