Express in usual form $3.61492\times {10}^6$

Express the following numbers in usual form:
$3.61492\times {10}^6$

Express the following numbers in usual form.

(i) 3.02 × 10⁻⁶ (ii) 4.5 × 10⁴

(iii) 3 × 10⁻⁸ (iv) 1.0001 × 10⁹

(v) 5.8 × 10¹² (vi) 3.61492 × 10⁶