15 * 8 = 120, 15 * 16 = 240, 15 * 32 = 480, two numbers multiply, one factor remains unchanged, the other factor multiplies or divides by several, the product will be（

15 * 8 = 120, 15 * 16 = 240, 15 * 32 = 480, two numbers multiply, one factor remains unchanged, the other factor multiplies or divides by several, the product will be（

If two numbers are multiplied, one factor remains unchanged, and the other factor is multiplied or divided by a few, the product will be (expanded to several times or reduced to a fraction)

The product of two numbers is 7 times of one and 246 times of the other. The product of these two numbers is ()

Product
=246×7
=1722

The product of two numbers is 247

Let these two numbers be a and B respectively
a•b=7a；a•b=246b；
b=7；a=246；
246•7=1722
A: the product of these two numbers is 1722