[automerger] Add check preventing div0 issue am: 27e47ce3c3 am: 357017a262 am: fef8617324 am: a7d57f7a14 am: 19d80c34be am: 96fa1d1842 am: 1ed02297a9 am: 0b4dbc600b am: fc340cad0c

Change-Id: Iae457c8c3cc80cfdb98f3aae4da3185e70aab424