#### Answer

Estimate: 87,000; Exact: 74,052

#### Work Step by Step

The total cost is found by adding the cost of the baking ovens (price x quantity) and the cost of the warming ovens (price x quantity).
To estimate, we round 32 to 30, 1538 to 2000, 28 to 30, and 887 to 900. Then we calculate the total cost using the estimated numbers:
30*2000 + 30*900 = 87,000
To find the exact total, we calculate using the actual numbers:
32*1538 + 28*887 = 74,052