Why is Shylock glad to see Launcelot leave his household to go to work for Bassanio?act 2

Bassanio tells Lancelet that Shylock told him that he preferred Lancelet go to work for Bassanio, although he doesn't specify exactly why (2.2.143-146).  Because Lancelet earlier tells his father that Shylock has not fed him well, we can infer that Shylock is glad to get rid of him so that he does not have to pay him or feed him, and thereby save money.