conversations.from: human
conversations.value: Bob has to hire someone to fix his garden.  A storm destroyed all 20 of his rose bushes.  He decides to replant all the rose bushes.  Each rose bush costs $150.  He also needs to pay a gardener $30 an hour, 5 hours each day for 4 days.  The final expense is 100 cubic feet of soil sold for $5 per cubic foot.  How much did the entire gardening project cost?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: The roses cost 150*20=$3000
  The gardener works 4*5=20 hours
  So the gardener charges 30*20=$600
  The soil added another 5*100=$500
  So in total the cost was 3000+600+500=$4100