Correct. They borrowed $150,000 for 6 months and had to repay $183,333. That is $33,333, or 44.4% interest on an annual basis.
But wait....that is not all. They also gave JMJ 3,951,940 shares of common stock as a bonus! You need to add in that cost to the loan, too. According to the 10-Q, they valued the shares at $51,920. So they really borrowed $150,000 for six months at a total cost of $85,253. On an annual basis, that corresponds to a 114% interest rate. And it assumes Mexus didn't have to issue additional common shares to JMJ to extend the maturity date by a week.
No company can stay in business long borrowing money at a annual cost of 114%.