No excel please

B- A computer PC or Laptop assembling company assembles personal computers or laptops from different generic parts. For this, it purchases generic parts in bulk at a discounted price from different sources wherever there is a good deal in terms of quality and less price. So, the company wants to forecast the demand for their PCs or laptops in order to determine the required generic parts to be purchased and keep as an inventory. The future demand forecast from Jan 20-Sep 20 using exponential smoothing and smoothing parameter a= 0.2 is computed by considering demand data of the last 12 months. Actual demand 30 34 35 30 40 Month & Year Jan 20 Feb 20 Mar 20 Apr 20 May'20 Jun 20 Jul 20 Aug 20 Sep 20 1- Calculate the exponential smoothing forecast of each month Jan 20-Sep 20 (Note: Jan 20= same as actual demand=30) 50 42 48 55