When you’re an online retail giant, every second that your website stays inaccessible means thousands of dollars out the virtual door.

For Amazon, that meant about $5 million in losses Monday afternoon when the Seattle company went down for about 40 minutes.

Amazon posted $15.7 billion in revenue last quarter, which breaks down to about $120,000 per minute. Multiply that by the 40 minutes Amazon went down and you get around $4.8 million in lost dollars.