Drill and method of manufacturing machined product

A drill comprising a rod-shaped body extending along a rotational axis from a first end toward a second end,

• the body comprising:
• a first outer peripheral surface extending from the first end toward the second end,
• a cutting edge positioned on the first end side,
• a first flute extending from the cutting edge toward the second end side and adjacent to the first outer peripheral surface forward in a rotational direction about the rotational axis, and
• a second flute extending from the cutting edge toward the second end side and adjacent to the first outer peripheral surface rearward in the rotational direction,
• the first outer peripheral surface comprising:
• a first margin extending along the first flute,
• a second margin extending along the second flute, and
• a first clearance positioned between the first margin and the second margin, the first margin extending closer to the second end side than the second margin,
• the second margin comprising:
• a first region positioned on the first end side, and
• a second region positioned on the second end side with respect to the first region, a width of the second region in a circumferential direction about the rotational axis decreasing from the first end side toward the second end side, and
• the second flute comprising:
• a first portion connected to the first region, and
• a second portion connected to the second region, a width of the second portion in the circumferential direction increasing from the first end toward the second end.