I need a formula for the sum of one column values (in three parts) subject to
conditions in another column.

column A conditionals are : sgd or usd or rp or blank, where blank is to be
read as "rp" . These are currency identifiiers.

column B is one list containing all the different currency values.

The objective is to get three (3) totals at the end of column B : sgd xxxxxxx

usd xxxxxxx

rp xxxxxxxxx
"sumif" doesn't seem to be the answer.
would be grateful for any guidance/solution to this question.