Consider the equation $0.5\cdot 10^{\large{8t}}=73$.
**Solve the equation for $t$. Express the solution as a logarithm in base-$10$.**
$t=$ [[☃ expression 1]]
**Approximate the value of $t$. Round your answer to the nearest thousandth.**
$t\approx$ [[☃ input-number 1]]