He hoped other organisations would get together to help raise funds for cancer research.
"We saw the Herald's Christmas cancer appeal and thought if we could give it some publicity to help, then it would all be for a good cause.
"If a club like ours can get on board, we have seen in the past that others can get on board too."
Mr Seeto said the Rotary Club of Newmarket raised between $250,000 and $300,000 each year for charities.
Ruby is to undergo chemotherapy over the next year and Mr Seeto said support was pouring in from all quarters.
"We are used to helping other people and have been quite humbled by people coming forward to offer their help from the Rotary Club and her school. One of her friends has even cut off her hair in support."
MOMENTUM GROWS
The Herald Christmas Appeal for cancer research has raised almost $40,000.
Our appeal, supporting the Auckland Cancer Society to mark 50 years of its successful research centre, will raise money for its ground-breaking laboratories.
The reader response has gathered momentum in the past fortnight and has two more weeks to run.