what is the product of place value of 4 and face value of 2 in 949209

For the number

1234
the face value of the digit 1 is 1.
the place value of the same digit is 1000, since by virtue of its position, 1 represents 1000 in the above number.
You can find the place value of a particular digit by replacing all other digits by zeroes, for example,
1234 => 1000 (place value).

For the posted problem, you can find the respective place and face values, then multiply them together to get the product.