An old English sovereign was a coin that was nominally worth one old English pound (the standard pound was a note, not a coin in times past). The shilling was worth 12 old English pennies. There were 240 old English pennies in a pound.
Luckily, these days English money has been decimalised, so there are 100 (new) pennies in a pound (which is only available in coin form these days).
I'll leave you to produce a Mathcad conversion worksheet Valery!
Alan
PS I am old enough to remember pre-decimal English currency. There were also threepenny-bit and sixpenny-bit coins, florins (two-shilling coins), crowns (five-shilling coins), half-crowns (a coin worth two shillings and sixpence) and ten-shilling notes. And at a time I can barely remember there were half-pennies and farthings (1/4 of a penny) too!
