Simplify the following text for a Grade 10 native English-speaking person.
Original: Released on March 30 , 1987 through A&M Records , the album was a huge commercial success selling over 2 million units worldwide , peaking at number 7 on the US Billboard 200 chart and reaching high positions in charts worldwide .
Simplified: Released on March 30 , 1987 through A&M Records , the album was a commercial success , albeit somewhat of a disappointment following the huge success of 1984 's `` Reckless '' . Into the Fire sold over 4 million units worldwide , peaking at number 7 on the US Billboard 200 chart and reaching high positions in charts worldwide .