global class UpdateYearlyContactSchedule implements Schedulable {
    global void execute(SchedulableContext sc) {
        Id execBTId5 = Database.executebatch(new SumAnnualRepairAmountBatch(),50);
        Id execBTId = Database.executebatch(new SumEquipmentInventoryBatch(),50);
        Id execBTId1 = Database.executebatch(new SummaryThreeYearsContractBatch(),50);
    }
}