After the fund joins, its income = (fund net value-position cost) × position share, while position cost = total subscription amount/(initial subscription amount/confirmed net value+added amount/confirmed net value).

For example, when the net value of the fund is 1 yuan, Xiao Li bought a fund 1 000. Now that the net fund value has risen to 1.5 yuan, Xiao Li's cost will also change accordingly. Without considering the formalities, Xiao Li's position cost =( 1×6544.

Its income = (1.5-1.25) × 2000 = 500 yuan.