You can calculate your bitcoin seconds like this: your sats / 1 million (or more precisely 1,041,666.667)…this is how many seconds it would take at 100% hash rate to recreate your stack.

(6.25 x 100,000,000 sats)/(10 minutes x 60 seconds per minute) is very close to 1 million…and your bitcoin seconds will double in April :)