Coala sdn bhd (CSB) is legal service firm. All sales of legal services are billed to the client ( there are no cash sales). CSB expects that on average 20% will be paid in the month of billing, 50% will be paid in the month following billing, and 25% will be paid in the second month following billing. For the next five months, the following sales billings are expected: RM May 84,000 June 100,800 July 77,000 August 86, 800 September 91,000 REQUIRED Prepared a schedule of collection for august and September