1. matt: ~ $ ./i.sh
  2. ./i.sh: line 5: let: upSeconds=22676.85 78157.21 && echo ): syntax error: invalid arithmetic operator (error token is ".85 78157.21 && echo )")
  3. ./i.sh: line 6: %60: syntax error: operand expected (error token is "%60")
  4. ./i.sh: line 7: /60%60: syntax error: operand expected (error token is "/60%60")
  5. ./i.sh: line 8: /3600%24: syntax error: operand expected (error token is "/3600%24")
  6. ./i.sh: line 9: /86400: syntax error: operand expected (error token is "/86400")
  7. ./i.sh: line 10: [: : integer expression expected
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