“My proceeds from the PayPal acquisition were $180 million. I put $100 million in SpaceX, $70 million in Tesla, and $10 million in Solar City. I had to borrow money for rent.”
— Elon Musk
Simplified Meaning:
He made $180 million from selling PayPal. He spent all that money on his new companies, SpaceX, Tesla, and Solar City, so he needed to borrow money to pay his rent.