Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Harry participates in the auction of a classic painting. The auction starts at $300, Harry is the first to bid, adding $200 to the starting value, a second bidder doubles the bid, and a third bidder adds three times Harry's bid. Finally, Harry bids $4,000. By how much did Harry's final bid exceed that of the third bidder?

### Response:
 Kwa kuongeza $200 ya Harry kwenye thamani ya kuanzia, zabuni inafikia $300 + $200 = $<<300+200=500>>500.
Mnada wa pili unadondosha zabuni ya awali mara mbili, kufikia thamani ya $500 * 2 = $<<500*2=1000>>1000.
Mnada wa tatu unazidisha zabuni ya awali ya Harry mara tatu, kisha unaongeza $500 * 3 = $<<3*500=1500>>1500.
Kwa kuongeza zabuni ya mwisho ya Harry, thamani inafikia $1,500 + $4,000 = $<<1500+4000=5500>>5500.
Kwa kiasi gani zabuni ya mwisho ya Harry ilizidi ile ya mnada wa tatu? $5,500 - $4,000 = $<<5500-4000=1500>>1500.