根據Coingecko: BTC/USD ATH = 64805 USD BTC/USD @24/10/2020 = 12928 USD 該曱甴爭老鳳嘅債項(本金)為: 70000 * 64805 / 12928 = 350893.4 USD 月利率10%,以continuous compound interest計算 截至24/08/2021欠債滿10個月,債項為 350893.4 * e = 953827.2 USD