Write the following in numeral form: 

Thirty million six hundred seven thousand four hundred eight

Complete the cross-number puzzle.

ACROSS
$\left(a\right)$ Seventy-two lakh four thousand five hundred sixty-one
$\left(d\right)$ Predecessor of $9741$
$\left(e\right)$ Successor of $123456$
$\left(g\right) CCLXVI + CXIX$
$\left(i\right)$ Smallest $7$-digit number

DOWN
$\left(b\right) CDLXXIV$
$\left(c\right) 600000+7000+800+70$
$\left(f\right)$ Place value of $2$ in $32075$
$\left(h\right) CXVI - LXXV$