Final answer:
To estimate the value of 23.4 x 13.9 / 0.18, round the numbers and perform the calculations to get an estimated value of 8944.44.
Step-by-step explanation:
To estimate the value of 23.4 x 13.9 / 0.18, we can round the numbers to the nearest whole number and perform the calculations. First, multiply 23 x 14 = 322. Then, divide that result by 0.2 to get 1610. Finally, divide 1610 by 0.18 to get the estimated value of 8944.44.