319 milliseconds (ms)=underline ( )seconds (s 86, seconds (s

* **Conversion:** There are 1000 milliseconds in 1 second. Therefore, to convert milliseconds to seconds, we divide by 1000.<br /><br />* **Calculation:** 319 ms / 1000 ms/s = 0.319 s<br /><br />* **Answer:** 319 milliseconds (ms) = **0.319** seconds (s)<br /><br /><br />86 seconds (s) = **86000** milliseconds (ms) (multiply by 1000)<br />