Can anyone help me with this question?

What is 60.9643790503 to 5 decimal

Use the second shift theorem to find the inverse laplace transform of (e^−3s) / (s^2 + 2s − 3)

You’re ordering more thread for blue jeans co. you usually purchase from ted’s threads, which sells 12 thread spools for $27. you recently received a notice from wade's wares that says you can buy thread from them for $2.30 each for the first 2 dozen and $2 a spool thereafter. you need to order 5 dozen spools. what percentage can you save by going with wade’s wares?