To fund a server to host only MasukWaktu & SolatAPI. I will bought DigitalOcean VPS droplet USD 7 / month + backup USD 1.40 / month So, for a year: $ 8.40 * 12 = 100.80 and I would like buffer 20% in case of anything (currency exchange when transfer, server price change). If nothing happen, those will go into my pocket. In the same time, if something happen over than 20% I will add my own money. Calculation: 8.40 x 12 = 100.80 100.80 x 20% = 20.16 Total = USD 120.96