I need the answers of the two questions to be explained to in clear step by step and understandable way please I prefer it to be using excel

1. Assume today's settlement price on a CME EUR futures contract is $1.3140/EUR. You have a short position in one contract. Your performance bond account currently has a balance of $1,700. The next three days' settlement prices are $1.3126, $1.3133, and $1.3049. Calculate the changes in the performance bond account from daily marking-to-market and the balance of the performance bond account after the third day. Solution: $1,700 ($1.3140-$1.3126) ($1.3126-$1.3133) +($1.3133-$1.3049)] xEUR125,000 $2,837.50, where EUR125,000 is the contract size of one EUR contract. 2. Do problem 1 again assuming you have a long position in the futures contract. Solution: $1,700($1.3126 $1.3140)($1.3133 $1.3126)($1.3049 $1.3133)]x EUR125,000 $562.50, where EUR125,000 is the contract size of one EUR contract With only $562.50 in your performance bond account, you would experience a margin call requesting that additional funds be added to your performance bond account to bring the balance back up to the initial performance bond level