Do a roaring trade (in something) British informal
To sell a lot of goods in a short period of time
Alison's done a roaring trade in second-hand clothes and helped her family to overcome the poverty.
Yesterday was a heavy rainy day, so Lee did a roaring trade in umbrellas.
The verb "do" should be conjugated according to its tense.
Being perfectly suitable for one's interests or abilities
Jasmine really loves children, so being a kindergarten teacher would be right up her alley.