Suming or Summing: How To spell?

The word Suming is misspelled against Summing, which is present continuous of "Sum"

Summing has double "mm" is mispronounced as "m"
Remember double 'MM' in between the strings su & ing which should not be misspelled with single 'M'
Wrong Spelling: su-m-ing
Correct Spelling: su-mm-ing
Check more misspelled words of Summing to spell it correct.