A futures contract over a $90$ day bank bill that has $$1$m face value

Exercise $1$: Bank Bill Futures Pricing

$$ A trader buys $1$ bank bill futures contract at $98\mathrm{.}97.$ How much underlying exposure have they purchased?

Exercise $2$: Bank Bill Futures

$$ The same trader sells the bank bill futures contract $10$ days later at $99\mathrm{.}16.$ What was their profit? $($hint: calculate sale value to $2$ decimal places as $A is a decimal currency$).$

Exercise $3$: Tick Value $($aka Point value$)$

$$ A trader buys one bank bill futures contract at $99\mathrm{.}14$ and sells it at $99\mathrm{.}15.$ How much was their profit?

Exercise $4$: Variable Tick Value

$$ A trader buys one bank bill futures contract at $92\mathrm{.}14$ and sells it at $92\mathrm{.}15.$ How much was their profit?

Exercise $5$: Trading Profits

$$ A trader goes long $15$ Bank bill futures at $99\mathrm{.}56,$ sells $10$ at $99\mathrm{.}58,$ buys $20$ at $99\mathrm{.}63,$ sell $30$ at $99\mathrm{.}61,$ and the market closes at $99\mathrm{.}58.$ What was her profit on the day?