you don't have any underlined digits but heirs all of them.
(646,950) the first 6 is in the one hundred thousands place
(46,950) the 4 is in the ten thousands place.
(6,950) the 6 is in the thousands place
(950) the 9 is in the hundreds place.
(50) the 5 is in the tenth place.
(0) and the 0 well you should know that .