Answer the following:

a) Multiply by breaking up the numbers: 408 x 6.
b) Find the least number that is divisible by 8, 12, and 20.
c) There are 27,500 seats in an auditorium. For a mega show, 18325
tickets were sold out. How many more tickets are available?
d) Find the H.C.F of 1,44,132 and 120.
e) Rama practises basketball thrice a day. She practises for 1 hr 45 mins in the morning. 3 hrs 15 mins in the afternoon, and for 1 hr 30 minutes in the evening. Calculate the total time Rama practises basketball in a day.