def ternary_search_tree(left, right)
  loop_cnt = 100

  loop_cnt.times do
    if yield((left * 2 + right) / 3) < yield((left + right * 2) / 3)
      right = (left + right * 2) / 3
    else
      left = (left * 2 + right) / 3
    end
  end

  (left + right) / 2
end

T = gets.to_i

def f(a, c, x)
  b = a % c
  k = a / c
  k2 = k + 1
  cost = 0
  cost += (c - b) * (k ** 2 + x)
  cost += b * (k2 ** 2 + x)

  cost
end

T.times do
  x, a = gets.split.map(&:to_i)

  right = 1
  left = a ** 2

  ans = ternary_search_tree(right, left) { |k|
    f(a, k, x)
  }

  puts f(a, ans, x)
end