Use the digits 1,3,4, and 7 to create two whole numbers whose product is estimated to be about 600. Explain your method.

13 x 47 = 611

I'm not the best at explains but I simply put the numbers together and multiplied them different ways till I got one that estimated to 600. Like 34x71 or 73x41 but the product of those weren't close the 600,

Does that make sense