2000000*8.55%/12*(1+8.55%/12)^60/[(1+8.55%/12)^60-1]=41081.28
總利息:41081.28 * 60-2000000 = 464876.80。
說明:60是60次方。
如果壹次還本付息,利息按年復利,利息金額為:
2000000*(1+8.55%)^5-2000000=1014249.06