Transaction

[Error Code: 1101] error caused by: 1 error occurred:
	* transaction execute failed: [Error Code: 1101] cadence runtime error: Execution failed:
error: underflow
  --> 234bcf81874cfc9b5f80120c371082821d8d8b440f1cd9242db5d3e77b1d23cc:18:17
   |
18 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^