If 768.792 ÷ 0.00823 = a, then find the value of 768792 ÷ 0.00823=?

Find the value of 0.38 × 0.5 - 2.35 + 1.96 - 0.25 + 0.85.

Find the simplified value of the expression $$\frac{(0.4×0.4+0.04×0.04-0.8×0.04)}{(0.72 )}$$​​