Complex sentence: When Walter later drops off more than $250,000--his biweekly profits--to Skyler, she became stunned by the amount, unsure how she'll launder his annual meth-lab earnings of over $7 million through their car wash.
Split into simpler sentences: When Walter later drops off more than $250,000--his biweekly profits--to Skyler. She's stunned by the amount, unsure how she'll launder his annual meth-lab earnings of over $7 million through their car wash.