To simplify \( 7^{18} \times 7 \) in exponential form, you can use the property of exponents that states:
\[ a^m \times a^n = a^{m+n} \]
In this case, we have:
\[ 7^{18} \times 7^1 = 7^{18+1} = 7^{19} \]
So, the simplified form of \( 7^{18} \times 7 \) is:
\[ 7^{19} \]