Some numbers from the article:
220 = normal per day cremations in Wuhan => ~ 6,400 to 6,800 = normal per month cremations in Wuhan
~ 28,000 = recent month number of cremations in Wuhan from “a source close to the provincial civil affairs bureau” who said that there were deaths at home without any diagnosis of or treatment for COVID-19
~ 2,500 = official number of COVID-19 deaths in Wuhan
The article also gives some numbers of total deaths that are estimated based on the number of urns of cremated ashes being handed out to families (500 per day for each of seven funeral homes) or the cremation capacity of the funeral homes (estimated at 1,560 per day), assuming that they are/were doing these things at maximum capacity for some amount of time.