Project quota shows a large number for memory

Issue

• Used Memory Quota for a project reports a very large number:

  $ oc describe quota -n myproject
  Name:                                                           my-quota
  Namespace:                                                      myproject
  Resource                                                        Used             Hard
  --------                                                        ----             ----
  cpu                                                             21800m           22
  memory                                                          84553892485200m  100Gi
  myclass.storageclass.storage.k8s.io/persistentvolumeclaims      0                1
  persistentvolumeclaims                                          10               10