What is one half of the prouduct ten and twenty

(10*20) * 1/2 = ur answer

$\text{product of 10 and 20 is }10\times 20\\ \text{one half of something is }\dfrac{1}{2}\times \text{something}\\ \text{Therefore one half of the product on 10 and 20 is }\dfrac{1}{2}\times 10\times 20$