We all make mistakes, as the Dalek said climbing off the dustbin.
FWiW .. here's mine (or is it?)
One Tsar Bomba ~ 50 megatonne.
One Hiroshima bomb ~ 15 kilotonne.
One Tsar Bomba ~ 50,000 / 15 ~ 3,333 Hiroshima bombs.
1,040 x Tsar Bomba ~ 3,466,667 Hiroshima bombs.
