I need help with dollar weighted average return espcially how to computer that in a calculator

CONCEPT check 5.1 A fund begins with $ 10 million and reports the following monthly results (with negative figures in parentheses): Month 0 1 2 Net inflows (end of month, $ million) 3 5 0 HPR (%) 28 (4) Compute the arithmetic, time-weighted, and dollar-weighted average monthly returns. Answer CONCEPT check 5.1 A fund begins with $ 10 million and reports the following monthly results (with negative figures in parentheses): Month 0 1 2 Net inflows (end of month, $ million) 3 5 0 HPR (%) 28 (4) Compute the arithmetic, time-weighted, and dollar-weighted average monthly returns