Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 81f13f50404924b17de699c5c3df0b447b89904e64a6dbdbed4d4f67f735c6bf:14:8
   |
14 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^