Factorial fun! Part-2

9!8!!÷7!6!!=?\Large{\color{#20A900}{\dfrac{9!}{8!!}}} \div {\color{#EC7300}{\dfrac{7!}{6!!}}} = \, ?

Notation:

n!!={n×(n2)××5×3×1if n is odd;n×(n2)××6×4×2if n is even;1if n=0,1. n!! = \begin{cases} n \times (n-2) \times \cdots \times 5 \times 3 \times 1 && \text{if } n \text{ is odd;} \\ n \times (n-2) \times \cdots \times 6 \times 4 \times 2 && \text{if } n \text{ is even;} \\ 1 && \text{if } n = 0, - 1. \\ \end{cases}


Try the first part here!
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