Mindbender

A: "You've been scribbling and cursing," said Martin. "What s the problem?"

"It's a girl I met, Dad," Dave replied. "She wouldn't give her phone number. Only that its initial 3-digit part is 447 more than the last three digits of its 4-digit second part, but 447 less than the first three of that second part."

What was the complete 7-digit number?

B: "That's wrong," said John. "You can't spell."

Ruth grabbed the old dictionary. "Then let's see how good you are," she told him. "I'll give you four words and you give me four. You give me 2p for every word you can't spell, and I'll give you 5p for any word I get wrong."

John agreed. But they ended up all square! How many of the words was Ruth unable to spell?