($7^{5}$+$7^{5}$) . ($5^{4}$+$5^{6}$) .($3^{3}$.3 -$9^{2}$)
= ($7^{5}$+$7^{5}$) . ($5^{4}$+$5^{6}$) . ($3^{4}$-$9^{2}$)
= ($7^{5}$+$7^{5}$) . ($5^{4}$+$5^{6}$) . [$3^{9}$-($3^{2}$)$^{2}$]
= ($7^{5}$+$7^{5}$) . ($5^{4}$+$5^{6}$) . ($3^{4}$-$3^{4}$)
= ($7^{5}$+$7^{5}$) . ($5^{4}$+$5^{6}$) . 0
= 0