<P> However it is usual to round the result of this calculation to a round number of degrees Celsius . </P> <P> (Appropriate references can found in the section above .) </P> <Table> Conversion table <Tr> <Th> Gas mark </Th> <Th> Fahrenheit </Th> <Th> Celsius </Th> <Th> Descriptive </Th> </Tr> <Tr> <Td> ​ ⁄ </Td> <Td> 225 ° </Td> <Td> 107 ° </Td> <Td> Very Slow / Very Low </Td> </Tr> <Tr> <Td> ​ ⁄ </Td> <Td> 250 ° </Td> <Td> 121 ° </Td> <Td> Very Slow / Very Low </Td> </Tr> <Tr> <Td> </Td> <Td> 275 ° </Td> <Td> 135 ° </Td> <Td> Slow / Low </Td> </Tr> <Tr> <Td> </Td> <Td> 300 ° </Td> <Td> 149 ° </Td> <Td> Slow / Low </Td> </Tr> <Tr> <Td> </Td> <Td> 325 ° </Td> <Td> 163 ° </Td> <Td> Moderately Slow / Warm </Td> </Tr> <Tr> <Td> </Td> <Td> 350 ° </Td> <Td> 177 ° </Td> <Td> Moderate / Medium </Td> </Tr> <Tr> <Td> 5 </Td> <Td> 375 ° </Td> <Td> 191 ° </Td> <Td> Moderate / Moderately Hot </Td> </Tr> <Tr> <Td> 6 </Td> <Td> 400 ° </Td> <Td> 204 ° </Td> <Td> Moderately Hot </Td> </Tr> <Tr> <Td> 7 </Td> <Td> 425 ° </Td> <Td> 218 ° </Td> <Td> Hot </Td> </Tr> <Tr> <Td> 8 </Td> <Td> 450 ° </Td> <Td> 232 ° </Td> <Td> Hot / Very Hot </Td> </Tr> <Tr> <Td> 9 </Td> <Td> 475 ° </Td> <Td> 246 ° </Td> <Td> Very Hot </Td> </Tr> <Tr> <Td> 10 </Td> <Td> 500 ° </Td> <Td> 260 ° </Td> <Td> </Td> </Tr> <Tr> <Td> 11 </Td> <Td> 525 ° </Td> <Td> 274 ° </Td> <Td> </Td> </Tr> <Tr> <Td> 12 </Td> <Td> 550 ° </Td> <Td> 288 ° </Td> <Td> </Td> </Tr> </Table> <Tr> <Th> Gas mark </Th> <Th> Fahrenheit </Th> <Th> Celsius </Th> <Th> Descriptive </Th> </Tr>

What is 180 degrees as a gas mark
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