Green Woods sells specialty equipment for mountain climbers. Its sales for last year included $387,000 of tents and $718,000 of climbing gear. For the next year management decided to sell sleeping bags. As a result of this change sales projections for the next year are $411,000 of tents $806,000 of climbing gear and $128,000 of sleeping bags. How much of next year’s sales are derived from the side effects of adding the new product to its sale offerings?